From 4b112ac47504c028c602bc80e42b032ed226bf2a Mon Sep 17 00:00:00 2001 From: "Edward M. Reingold" Date: Thu, 21 Sep 1995 02:57:43 +0000 Subject: [PATCH] Initial revision --- lisp/calendar/cal-hebrew.el | 1179 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1179 insertions(+) create mode 100644 lisp/calendar/cal-hebrew.el diff --git a/lisp/calendar/cal-hebrew.el b/lisp/calendar/cal-hebrew.el new file mode 100644 index 00000000000..2c08b3049c9 --- /dev/null +++ b/lisp/calendar/cal-hebrew.el @@ -0,0 +1,1179 @@ +;;; cal-hebrew.el --- calendar functions for the Islamic calendar. + +;; Copyright (C) 1995 Free Software Foundation, Inc. + +;; Author: Nachum Dershowi +;; Edward M. Reingold +;; Keywords: calendar +;; Human-Keywords: Hebrew calendar, calendar, diary + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to +;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + +;;; Commentary: + +;; This collection of functions implements the features of calendar.el and +;; diary.el that deal with the Hebrew calendar. + +;; Comments, corrections, and improvements should be sent to +;; Edward M. Reingold Department of Computer Science +;; (217) 333-6733 University of Illinois at Urbana-Champaign +;; reingold@cs.uiuc.edu 1304 West Springfield Avenue +;; Urbana, Illinois 61801 + +;;; Code: + +(require 'calendar) + +(defun calendar-hebrew-from-absolute (date) + "Compute the Hebrew date (month day year) corresponding to absolute DATE. +The absolute date is the number of days elapsed since the (imaginary) +Gregorian date Sunday, December 31, 1 BC." + (let* ((greg-date (calendar-gregorian-from-absolute date)) + (month (aref [9 10 11 12 1 2 3 4 7 7 7 8] + (1- (extract-calendar-month greg-date)))) + (day) + (year (+ 3760 (extract-calendar-year greg-date)))) + (while (>= date (calendar-absolute-from-hebrew (list 7 1 (1+ year)))) + (setq year (1+ year))) + (let ((length (hebrew-calendar-last-month-of-year year))) + (while (> date + (calendar-absolute-from-hebrew + (list month + (hebrew-calendar-last-day-of-month month year) + year))) + (setq month (1+ (% month length))))) + (setq day (1+ + (- date (calendar-absolute-from-hebrew (list month 1 year))))) + (list month day year))) + +(defun hebrew-calendar-leap-year-p (year) + "t if YEAR is a Hebrew calendar leap year." + (< (% (1+ (* 7 year)) 19) 7)) + +(defun hebrew-calendar-last-month-of-year (year) + "The last month of the Hebrew calendar YEAR." + (if (hebrew-calendar-leap-year-p year) + 13 + 12)) + +(defun hebrew-calendar-last-day-of-month (month year) + "The last day of MONTH in YEAR." + (if (or (memq month (list 2 4 6 10 13)) + (and (= month 12) (not (hebrew-calendar-leap-year-p year))) + (and (= month 8) (not (hebrew-calendar-long-heshvan-p year))) + (and (= month 9) (hebrew-calendar-short-kislev-p year))) + 29 + 30)) + +(defun hebrew-calendar-elapsed-days (year) + "Days from Sun. prior to start of Hebrew calendar to mean conjunction of Tishri of Hebrew YEAR." + (let* ((months-elapsed + (+ (* 235 (/ (1- year) 19));; Months in complete cycles so far. + (* 12 (% (1- year) 19)) ;; Regular months in this cycle + (/ (1+ (* 7 (% (1- year) 19))) 19)));; Leap months this cycle + (parts-elapsed (+ 204 (* 793 (% months-elapsed 1080)))) + (hours-elapsed (+ 5 + (* 12 months-elapsed) + (* 793 (/ months-elapsed 1080)) + (/ parts-elapsed 1080))) + (parts ;; Conjunction parts + (+ (* 1080 (% hours-elapsed 24)) (% parts-elapsed 1080))) + (day ;; Conjunction day + (+ 1 (* 29 months-elapsed) (/ hours-elapsed 24))) + (alternative-day + (if (or (>= parts 19440) ;; If the new moon is at or after midday, + (and (= (% day 7) 2);; ...or is on a Tuesday... + (>= parts 9924) ;; at 9 hours, 204 parts or later... + (not (hebrew-calendar-leap-year-p year)));; of a + ;; common year, + (and (= (% day 7) 1);; ...or is on a Monday... + (>= parts 16789) ;; at 15 hours, 589 parts or later... + (hebrew-calendar-leap-year-p (1- year))));; at the end + ;; of a leap year + ;; Then postpone Rosh HaShanah one day + (1+ day) + ;; Else + day))) + (if ;; If Rosh HaShanah would occur on Sunday, Wednesday, or Friday + (memq (% alternative-day 7) (list 0 3 5)) + ;; Then postpone it one (more) day and return + (1+ alternative-day) + ;; Else return + alternative-day))) + +(defun hebrew-calendar-days-in-year (year) + "Number of days in Hebrew YEAR." + (- (hebrew-calendar-elapsed-days (1+ year)) + (hebrew-calendar-elapsed-days year))) + +(defun hebrew-calendar-long-heshvan-p (year) + "t if Heshvan is long in Hebrew YEAR." + (= (% (hebrew-calendar-days-in-year year) 10) 5)) + +(defun hebrew-calendar-short-kislev-p (year) + "t if Kislev is short in Hebrew YEAR." + (= (% (hebrew-calendar-days-in-year year) 10) 3)) + +(defun calendar-absolute-from-hebrew (date) + "Absolute date of Hebrew DATE. +The absolute date is the number of days elapsed since the (imaginary) +Gregorian date Sunday, December 31, 1 BC." + (let* ((month (extract-calendar-month date)) + (day (extract-calendar-day date)) + (year (extract-calendar-year date))) + (+ day ;; Days so far this month. + (if (< month 7);; before Tishri + ;; Then add days in prior months this year before and after Nisan + (+ (calendar-sum + m 7 (<= m (hebrew-calendar-last-month-of-year year)) + (hebrew-calendar-last-day-of-month m year)) + (calendar-sum + m 1 (< m month) + (hebrew-calendar-last-day-of-month m year))) + ;; Else add days in prior months this year + (calendar-sum + m 7 (< m month) + (hebrew-calendar-last-day-of-month m year))) + (hebrew-calendar-elapsed-days year);; Days in prior years. + -1373429))) ;; Days elapsed before absolute date 1. + +(defvar calendar-hebrew-month-name-array-common-year + ["Nisan" "Iyar" "Sivan" "Tammuz" "Av" "Elul" "Tishri" + "Heshvan" "Kislev" "Teveth" "Shevat" "Adar"]) + +(defvar calendar-hebrew-month-name-array-leap-year + ["Nisan" "Iyar" "Sivan" "Tammuz" "Av" "Elul" "Tishri" + "Heshvan" "Kislev" "Teveth" "Shevat" "Adar I" "Adar II"]) + +(defun calendar-hebrew-date-string (&optional date) + "String of Hebrew date before sunset of Gregorian DATE. +Defaults to today's date if DATE is not given. +Driven by the variable `calendar-date-display-form'." + (let* ((hebrew-date (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (or date (calendar-current-date))))) + (calendar-month-name-array + (if (hebrew-calendar-leap-year-p (extract-calendar-year hebrew-date)) + calendar-hebrew-month-name-array-leap-year + calendar-hebrew-month-name-array-common-year))) + (calendar-date-string hebrew-date nil t))) + +(defun calendar-print-hebrew-date () + "Show the Hebrew calendar equivalent of the date under the cursor." + (interactive) + (message "Hebrew date (until sunset): %s" + (calendar-hebrew-date-string (calendar-cursor-to-date t)))) + +(defun hebrew-calendar-yahrzeit (death-date year) + "Absolute date of the anniversary of Hebrew DEATH-DATE in Hebrew YEAR." + (let* ((death-day (extract-calendar-day death-date)) + (death-month (extract-calendar-month death-date)) + (death-year (extract-calendar-year death-date))) + (cond + ;; If it's Heshvan 30 it depends on the first anniversary; if + ;; that was not Heshvan 30, use the day before Kislev 1. + ((and (= death-month 8) + (= death-day 30) + (not (hebrew-calendar-long-heshvan-p (1+ death-year)))) + (1- (calendar-absolute-from-hebrew (list 9 1 year)))) + ;; If it's Kislev 30 it depends on the first anniversary; if + ;; that was not Kislev 30, use the day before Teveth 1. + ((and (= death-month 9) + (= death-day 30) + (hebrew-calendar-short-kislev-p (1+ death-year))) + (1- (calendar-absolute-from-hebrew (list 10 1 year)))) + ;; If it's Adar II, use the same day in last month of + ;; year (Adar or Adar II). + ((= death-month 13) + (calendar-absolute-from-hebrew + (list (hebrew-calendar-last-month-of-year year) death-day year))) + ;; If it's the 30th in Adar I and year is not a leap year + ;; (so Adar has only 29 days), use the last day in Shevat. + ((and (= death-day 30) + (= death-month 12) + (not (hebrew-calendar-leap-year-p year))) + (calendar-absolute-from-hebrew (list 11 30 year))) + ;; In all other cases, use the normal anniversary of the date of death. + (t (calendar-absolute-from-hebrew + (list death-month death-day year)))))) + +(defun calendar-goto-hebrew-date (date &optional noecho) + "Move cursor to Hebrew DATE; echo Hebrew date unless NOECHO is t." + (interactive + (let* ((today (calendar-current-date)) + (year (calendar-read + "Hebrew calendar year (>3760): " + '(lambda (x) (> x 3760)) + (int-to-string + (extract-calendar-year + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian today)))))) + (month-array (if (hebrew-calendar-leap-year-p year) + calendar-hebrew-month-name-array-leap-year + calendar-hebrew-month-name-array-common-year)) + (completion-ignore-case t) + (month (cdr (assoc + (capitalize + (completing-read + "Hebrew calendar month name: " + (mapcar 'list (append month-array nil)) + (if (= year 3761) + '(lambda (x) + (let ((m (cdr + (assoc + (car x) + (calendar-make-alist + month-array))))) + (< 0 + (calendar-absolute-from-hebrew + (list m + (hebrew-calendar-last-day-of-month + m year) + year)))))) + + t)) + (calendar-make-alist month-array 1 'capitalize)))) + (last (hebrew-calendar-last-day-of-month month year)) + (first (if (and (= year 3761) (= month 10)) + 18 1)) + (day (calendar-read + (format "Hebrew calendar day (%d-%d): " + first last) + '(lambda (x) (and (<= first x) (<= x last)))))) + (list (list month day year)))) + (calendar-goto-date (calendar-gregorian-from-absolute + (calendar-absolute-from-hebrew date))) + (or noecho (calendar-print-hebrew-date))) + +(defun holiday-hebrew (month day string) + "Holiday on MONTH, DAY (Hebrew) called STRING. +If MONTH, DAY (Hebrew) is visible, the value returned is corresponding +Gregorian date in the form of the list (((month day year) STRING)). Returns +nil if it is not visible in the current calendar window." + (if (memq displayed-month;; This test is only to speed things up a bit; + (list ;; it works fine without the test too. + (if (< 11 month) (- month 11) (+ month 1)) + (if (< 10 month) (- month 10) (+ month 2)) + (if (< 9 month) (- month 9) (+ month 3)) + (if (< 8 month) (- month 8) (+ month 4)) + (if (< 7 month) (- month 7) (+ month 5)))) + (let ((m1 displayed-month) + (y1 displayed-year) + (m2 displayed-month) + (y2 displayed-year) + (year)) + (increment-calendar-month m1 y1 -1) + (increment-calendar-month m2 y2 1) + (let* ((start-date (calendar-absolute-from-gregorian + (list m1 1 y1))) + (end-date (calendar-absolute-from-gregorian + (list m2 (calendar-last-day-of-month m2 y2) y2))) + (hebrew-start (calendar-hebrew-from-absolute start-date)) + (hebrew-end (calendar-hebrew-from-absolute end-date)) + (hebrew-y1 (extract-calendar-year hebrew-start)) + (hebrew-y2 (extract-calendar-year hebrew-end))) + (setq year (if (< 6 month) hebrew-y2 hebrew-y1)) + (let ((date (calendar-gregorian-from-absolute + (calendar-absolute-from-hebrew + (list month day year))))) + (if (calendar-date-is-visible-p date) + (list (list date string)))))))) + +(defun holiday-rosh-hashanah-etc () + "List of dates related to Rosh Hashanah, as visible in calendar window." + (if (or (< displayed-month 8) + (> displayed-month 11)) + nil;; None of the dates is visible + (let* ((abs-r-h (calendar-absolute-from-hebrew + (list 7 1 (+ displayed-year 3761)))) + (mandatory + (list + (list (calendar-gregorian-from-absolute abs-r-h) + (format "Rosh HaShanah %d" (+ 3761 displayed-year))) + (list (calendar-gregorian-from-absolute (+ abs-r-h 9)) + "Yom Kippur") + (list (calendar-gregorian-from-absolute (+ abs-r-h 14)) + "Sukkot") + (list (calendar-gregorian-from-absolute (+ abs-r-h 21)) + "Shemini Atzeret") + (list (calendar-gregorian-from-absolute (+ abs-r-h 22)) + "Simchat Torah"))) + (optional + (list + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (- abs-r-h 4))) + "Selichot (night)") + (list (calendar-gregorian-from-absolute (1- abs-r-h)) + "Erev Rosh HaShannah") + (list (calendar-gregorian-from-absolute (1+ abs-r-h)) + "Rosh HaShanah (second day)") + (list (calendar-gregorian-from-absolute + (if (= (% abs-r-h 7) 4) (+ abs-r-h 3) (+ abs-r-h 2))) + "Tzom Gedaliah") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (+ 7 abs-r-h))) + "Shabbat Shuvah") + (list (calendar-gregorian-from-absolute (+ abs-r-h 8)) + "Erev Yom Kippur") + (list (calendar-gregorian-from-absolute (+ abs-r-h 13)) + "Erev Sukkot") + (list (calendar-gregorian-from-absolute (+ abs-r-h 15)) + "Sukkot (second day)") + (list (calendar-gregorian-from-absolute (+ abs-r-h 16)) + "Hol Hamoed Sukkot (first day)") + (list (calendar-gregorian-from-absolute (+ abs-r-h 17)) + "Hol Hamoed Sukkot (second day)") + (list (calendar-gregorian-from-absolute (+ abs-r-h 18)) + "Hol Hamoed Sukkot (third day)") + (list (calendar-gregorian-from-absolute (+ abs-r-h 19)) + "Hol Hamoed Sukkot (fourth day)") + (list (calendar-gregorian-from-absolute (+ abs-r-h 20)) + "Hoshannah Rabbah"))) + (output-list + (filter-visible-calendar-holidays mandatory))) + (if all-hebrew-calendar-holidays + (setq output-list + (append + (filter-visible-calendar-holidays optional) + output-list))) + output-list))) + +(defun holiday-hanukkah () + "List of dates related to Hanukkah, as visible in calendar window." + (if (memq displayed-month;; This test is only to speed things up a bit; + '(10 11 12 1 2));; it works fine without the test too. + (let ((m displayed-month) + (y displayed-year)) + (increment-calendar-month m y 1) + (let* ((h-y (extract-calendar-year + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (list m (calendar-last-day-of-month m y) y))))) + (abs-h (calendar-absolute-from-hebrew (list 9 25 h-y)))) + (filter-visible-calendar-holidays + (list + (list (calendar-gregorian-from-absolute (1- abs-h)) + "Erev Hanukkah") + (list (calendar-gregorian-from-absolute abs-h) + "Hanukkah (first day)") + (list (calendar-gregorian-from-absolute (1+ abs-h)) + "Hanukkah (second day)") + (list (calendar-gregorian-from-absolute (+ abs-h 2)) + "Hanukkah (third day)") + (list (calendar-gregorian-from-absolute (+ abs-h 3)) + "Hanukkah (fourth day)") + (list (calendar-gregorian-from-absolute (+ abs-h 4)) + "Hanukkah (fifth day)") + (list (calendar-gregorian-from-absolute (+ abs-h 5)) + "Hanukkah (sixth day)") + (list (calendar-gregorian-from-absolute (+ abs-h 6)) + "Hanukkah (seventh day)") + (list (calendar-gregorian-from-absolute (+ abs-h 7)) + "Hanukkah (eighth day)"))))))) + +(defun holiday-passover-etc () + "List of dates related to Passover, as visible in calendar window." + (if (< 7 displayed-month) + nil;; None of the dates is visible + (let* ((abs-p (calendar-absolute-from-hebrew + (list 1 15 (+ displayed-year 3760)))) + (mandatory + (list + (list (calendar-gregorian-from-absolute abs-p) + "Passover") + (list (calendar-gregorian-from-absolute (+ abs-p 50)) + "Shavuot"))) + (optional + (list + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (- abs-p 43))) + "Shabbat Shekalim") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (- abs-p 30))) + "Shabbat Zachor") + (list (calendar-gregorian-from-absolute + (if (= (% abs-p 7) 2) (- abs-p 33) (- abs-p 31))) + "Fast of Esther") + (list (calendar-gregorian-from-absolute (- abs-p 31)) + "Erev Purim") + (list (calendar-gregorian-from-absolute (- abs-p 30)) + "Purim") + (list (calendar-gregorian-from-absolute + (if (zerop (% abs-p 7)) (- abs-p 28) (- abs-p 29))) + "Shushan Purim") + (list (calendar-gregorian-from-absolute + (- (calendar-dayname-on-or-before 6 (- abs-p 14)) 7)) + "Shabbat Parah") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (- abs-p 14))) + "Shabbat HaHodesh") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (1- abs-p))) + "Shabbat HaGadol") + (list (calendar-gregorian-from-absolute (1- abs-p)) + "Erev Passover") + (list (calendar-gregorian-from-absolute (1+ abs-p)) + "Passover (second day)") + (list (calendar-gregorian-from-absolute (+ abs-p 2)) + "Hol Hamoed Passover (first day)") + (list (calendar-gregorian-from-absolute (+ abs-p 3)) + "Hol Hamoed Passover (second day)") + (list (calendar-gregorian-from-absolute (+ abs-p 4)) + "Hol Hamoed Passover (third day)") + (list (calendar-gregorian-from-absolute (+ abs-p 5)) + "Hol Hamoed Passover (fourth day)") + (list (calendar-gregorian-from-absolute (+ abs-p 6)) + "Passover (seventh day)") + (list (calendar-gregorian-from-absolute (+ abs-p 7)) + "Passover (eighth day)") + (list (calendar-gregorian-from-absolute (+ abs-p 12)) + "Yom HaShoah") + (list (calendar-gregorian-from-absolute + (if (zerop (% abs-p 7)) + (+ abs-p 18) + (if (= (% abs-p 7) 6) + (+ abs-p 19) + (+ abs-p 20)))) + "Yom HaAtzma'ut") + (list (calendar-gregorian-from-absolute (+ abs-p 33)) + "Lag BaOmer") + (list (calendar-gregorian-from-absolute (+ abs-p 43)) + "Yom Yerushalim") + (list (calendar-gregorian-from-absolute (+ abs-p 49)) + "Erev Shavuot") + (list (calendar-gregorian-from-absolute (+ abs-p 51)) + "Shavuot (second day)"))) + (output-list + (filter-visible-calendar-holidays mandatory))) + (if all-hebrew-calendar-holidays + (setq output-list + (append + (filter-visible-calendar-holidays optional) + output-list))) + output-list))) + +(defun holiday-tisha-b-av-etc () + "List of dates around Tisha B'Av, as visible in calendar window." + (if (or (< displayed-month 5) + (> displayed-month 9)) + nil;; None of the dates is visible + (let* ((abs-t-a (calendar-absolute-from-hebrew + (list 5 9 (+ displayed-year 3760))))) + + (filter-visible-calendar-holidays + (list + (list (calendar-gregorian-from-absolute + (if (= (% abs-t-a 7) 6) (- abs-t-a 20) (- abs-t-a 21))) + "Tzom Tammuz") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 abs-t-a)) + "Shabbat Hazon") + (list (calendar-gregorian-from-absolute + (if (= (% abs-t-a 7) 6) (1+ abs-t-a) abs-t-a)) + "Tisha B'Av") + (list (calendar-gregorian-from-absolute + (calendar-dayname-on-or-before 6 (+ abs-t-a 7))) + "Shabbat Nahamu")))))) + +(defun list-hebrew-diary-entries () + "Add any Hebrew date entries from the diary file to `diary-entries-list'. +Hebrew date diary entries must be prefaced by `hebrew-diary-entry-symbol' +\(normally an `H'). The same diary date forms govern the style of the Hebrew +calendar entries, except that the Hebrew month names must be spelled in full. +The Hebrew months are numbered from 1 to 13 with Nisan being 1, 12 being +Adar I and 13 being Adar II; you must use `Adar I' if you want Adar of a +common Hebrew year. If a Hebrew date diary entry begins with a +`diary-nonmarking-symbol', the entry will appear in the diary listing, but will +not be marked in the calendar. This function is provided for use with the +`nongregorian-diary-listing-hook'." + (if (< 0 number) + (let ((buffer-read-only nil) + (diary-modified (buffer-modified-p)) + (gdate original-date) + (mark (regexp-quote diary-nonmarking-symbol))) + (calendar-for-loop i from 1 to number do + (let* ((d diary-date-forms) + (hdate (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian gdate))) + (month (extract-calendar-month hdate)) + (day (extract-calendar-day hdate)) + (year (extract-calendar-year hdate))) + (while d + (let* + ((date-form (if (equal (car (car d)) 'backup) + (cdr (car d)) + (car d))) + (backup (equal (car (car d)) 'backup)) + (dayname + (concat + (calendar-day-name gdate) "\\|" + (substring (calendar-day-name gdate) 0 3) ".?")) + (calendar-month-name-array + calendar-hebrew-month-name-array-leap-year) + (monthname + (concat + "\\*\\|" + (calendar-month-name month))) + (month (concat "\\*\\|0*" (int-to-string month))) + (day (concat "\\*\\|0*" (int-to-string day))) + (year + (concat + "\\*\\|0*" (int-to-string year) + (if abbreviated-calendar-year + (concat "\\|" (int-to-string (% year 100))) + ""))) + (regexp + (concat + "\\(\\`\\|\^M\\|\n\\)" mark "?" + (regexp-quote hebrew-diary-entry-symbol) + "\\(" + (mapconcat 'eval date-form "\\)\\(") + "\\)")) + (case-fold-search t)) + (goto-char (point-min)) + (while (re-search-forward regexp nil t) + (if backup (re-search-backward "\\<" nil t)) + (if (and (or (char-equal (preceding-char) ?\^M) + (char-equal (preceding-char) ?\n)) + (not (looking-at " \\|\^I"))) + ;; Diary entry that consists only of date. + (backward-char 1) + ;; Found a nonempty diary entry--make it visible and + ;; add it to the list. + (let ((entry-start (point)) + (date-start)) + (re-search-backward "\^M\\|\n\\|\\`") + (setq date-start (point)) + (re-search-forward "\^M\\|\n" nil t 2) + (while (looking-at " \\|\^I") + (re-search-forward "\^M\\|\n" nil t)) + (backward-char 1) + (subst-char-in-region date-start (point) ?\^M ?\n t) + (add-to-diary-list + gdate (buffer-substring entry-start (point))))))) + (setq d (cdr d)))) + (setq gdate + (calendar-gregorian-from-absolute + (1+ (calendar-absolute-from-gregorian gdate))))) + (set-buffer-modified-p diary-modified)) + (goto-char (point-min)))) + +(defun mark-hebrew-diary-entries () + "Mark days in the calendar window that have Hebrew date diary entries. +Each entry in diary-file (or included files) visible in the calendar window +is marked. Hebrew date entries are prefaced by a hebrew-diary-entry-symbol +\(normally an `H'). The same diary-date-forms govern the style of the Hebrew +calendar entries, except that the Hebrew month names must be spelled in full. +The Hebrew months are numbered from 1 to 13 with Nisan being 1, 12 being +Adar I and 13 being Adar II; you must use `Adar I' if you want Adar of a +common Hebrew year. Hebrew date diary entries that begin with a +diary-nonmarking symbol will not be marked in the calendar. This function +is provided for use as part of the nongregorian-diary-marking-hook." + (let ((d diary-date-forms)) + (while d + (let* + ((date-form (if (equal (car (car d)) 'backup) + (cdr (car d)) + (car d)));; ignore 'backup directive + (dayname (diary-name-pattern calendar-day-name-array)) + (monthname + (concat + (diary-name-pattern calendar-hebrew-month-name-array-leap-year t) + "\\|\\*")) + (month "[0-9]+\\|\\*") + (day "[0-9]+\\|\\*") + (year "[0-9]+\\|\\*") + (l (length date-form)) + (d-name-pos (- l (length (memq 'dayname date-form)))) + (d-name-pos (if (/= l d-name-pos) (+ 2 d-name-pos))) + (m-name-pos (- l (length (memq 'monthname date-form)))) + (m-name-pos (if (/= l m-name-pos) (+ 2 m-name-pos))) + (d-pos (- l (length (memq 'day date-form)))) + (d-pos (if (/= l d-pos) (+ 2 d-pos))) + (m-pos (- l (length (memq 'month date-form)))) + (m-pos (if (/= l m-pos) (+ 2 m-pos))) + (y-pos (- l (length (memq 'year date-form)))) + (y-pos (if (/= l y-pos) (+ 2 y-pos))) + (regexp + (concat + "\\(\\`\\|\^M\\|\n\\)" + (regexp-quote hebrew-diary-entry-symbol) + "\\(" + (mapconcat 'eval date-form "\\)\\(") + "\\)")) + (case-fold-search t)) + (goto-char (point-min)) + (while (re-search-forward regexp nil t) + (let* ((dd-name + (if d-name-pos + (buffer-substring + (match-beginning d-name-pos) + (match-end d-name-pos)))) + (mm-name + (if m-name-pos + (buffer-substring + (match-beginning m-name-pos) + (match-end m-name-pos)))) + (mm (string-to-int + (if m-pos + (buffer-substring + (match-beginning m-pos) + (match-end m-pos)) + ""))) + (dd (string-to-int + (if d-pos + (buffer-substring + (match-beginning d-pos) + (match-end d-pos)) + ""))) + (y-str (if y-pos + (buffer-substring + (match-beginning y-pos) + (match-end y-pos)))) + (yy (if (not y-str) + 0 + (if (and (= (length y-str) 2) + abbreviated-calendar-year) + (let* ((current-y + (extract-calendar-year + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (calendar-current-date))))) + (y (+ (string-to-int y-str) + (* 100 (/ current-y 100))))) + (if (> (- y current-y) 50) + (- y 100) + (if (> (- current-y y) 50) + (+ y 100) + y))) + (string-to-int y-str))))) + (if dd-name + (mark-calendar-days-named + (cdr (assoc (capitalize (substring dd-name 0 3)) + (calendar-make-alist + calendar-day-name-array + 0 + '(lambda (x) (substring x 0 3)))))) + (if mm-name + (if (string-equal mm-name "*") + (setq mm 0) + (setq + mm + (cdr + (assoc + (capitalize mm-name) + (calendar-make-alist + calendar-hebrew-month-name-array-leap-year)))))) + (mark-hebrew-calendar-date-pattern mm dd yy))))) + (setq d (cdr d))))) + +(defun mark-hebrew-calendar-date-pattern (month day year) + "Mark dates in calendar window that conform to Hebrew date MONTH/DAY/YEAR. +A value of 0 in any position is a wildcard." + (save-excursion + (set-buffer calendar-buffer) + (if (and (/= 0 month) (/= 0 day)) + (if (/= 0 year) + ;; Fully specified Hebrew date. + (let ((date (calendar-gregorian-from-absolute + (calendar-absolute-from-hebrew + (list month day year))))) + (if (calendar-date-is-visible-p date) + (mark-visible-calendar-date date))) + ;; Month and day in any year--this taken from the holiday stuff. + (if (memq displayed-month;; This test is only to speed things up a + (list ;; bit; it works fine without the test too. + (if (< 11 month) (- month 11) (+ month 1)) + (if (< 10 month) (- month 10) (+ month 2)) + (if (< 9 month) (- month 9) (+ month 3)) + (if (< 8 month) (- month 8) (+ month 4)) + (if (< 7 month) (- month 7) (+ month 5)))) + (let ((m1 displayed-month) + (y1 displayed-year) + (m2 displayed-month) + (y2 displayed-year) + (year)) + (increment-calendar-month m1 y1 -1) + (increment-calendar-month m2 y2 1) + (let* ((start-date (calendar-absolute-from-gregorian + (list m1 1 y1))) + (end-date (calendar-absolute-from-gregorian + (list m2 + (calendar-last-day-of-month m2 y2) + y2))) + (hebrew-start + (calendar-hebrew-from-absolute start-date)) + (hebrew-end (calendar-hebrew-from-absolute end-date)) + (hebrew-y1 (extract-calendar-year hebrew-start)) + (hebrew-y2 (extract-calendar-year hebrew-end))) + (setq year (if (< 6 month) hebrew-y2 hebrew-y1)) + (let ((date (calendar-gregorian-from-absolute + (calendar-absolute-from-hebrew + (list month day year))))) + (if (calendar-date-is-visible-p date) + (mark-visible-calendar-date date))))))) + ;; Not one of the simple cases--check all visible dates for match. + ;; Actually, the following code takes care of ALL of the cases, but + ;; it's much too slow to be used for the simple (common) cases. + (let ((m displayed-month) + (y displayed-year) + (first-date) + (last-date)) + (increment-calendar-month m y -1) + (setq first-date + (calendar-absolute-from-gregorian + (list m 1 y))) + (increment-calendar-month m y 2) + (setq last-date + (calendar-absolute-from-gregorian + (list m (calendar-last-day-of-month m y) y))) + (calendar-for-loop date from first-date to last-date do + (let* ((h-date (calendar-hebrew-from-absolute date)) + (h-month (extract-calendar-month h-date)) + (h-day (extract-calendar-day h-date)) + (h-year (extract-calendar-year h-date))) + (and (or (zerop month) + (= month h-month)) + (or (zerop day) + (= day h-day)) + (or (zerop year) + (= year h-year)) + (mark-visible-calendar-date + (calendar-gregorian-from-absolute date))))))))) + +(defun insert-hebrew-diary-entry (arg) + "Insert a diary entry. +For the Hebrew date corresponding to the date indicated by point. +Prefix arg will make the entry nonmarking." + (interactive "P") + (let* ((calendar-month-name-array + calendar-hebrew-month-name-array-leap-year)) + (make-diary-entry + (concat + hebrew-diary-entry-symbol + (calendar-date-string + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (calendar-cursor-to-date t))) + nil t)) + arg))) + +(defun insert-monthly-hebrew-diary-entry (arg) + "Insert a monthly diary entry. +For the day of the Hebrew month corresponding to the date indicated by point. +Prefix arg will make the entry nonmarking." + (interactive "P") + (let* ((calendar-date-display-form + (if european-calendar-style '(day " * ") '("* " day ))) + (calendar-month-name-array + calendar-hebrew-month-name-array-leap-year)) + (make-diary-entry + (concat + hebrew-diary-entry-symbol + (calendar-date-string + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (calendar-cursor-to-date t))))) + arg))) + +(defun insert-yearly-hebrew-diary-entry (arg) + "Insert an annual diary entry. +For the day of the Hebrew year corresponding to the date indicated by point. +Prefix arg will make the entry nonmarking." + (interactive "P") + (let* ((calendar-date-display-form + (if european-calendar-style + '(day " " monthname) + '(monthname " " day))) + (calendar-month-name-array + calendar-hebrew-month-name-array-leap-year)) + (make-diary-entry + (concat + hebrew-diary-entry-symbol + (calendar-date-string + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (calendar-cursor-to-date t))))) + arg))) + +;;;###autoload +(defun list-yahrzeit-dates (death-date start-year end-year) + "List Yahrzeit dates for *Gregorian* DEATH-DATE from START-YEAR to END-YEAR. +When called interactively from the calendar window, the date of death is taken +from the cursor position." + (interactive + (let* ((death-date + (if (equal (current-buffer) (get-buffer calendar-buffer)) + (calendar-cursor-to-date) + (let* ((today (calendar-current-date)) + (year (calendar-read + "Year of death (>0): " + '(lambda (x) (> x 0)) + (int-to-string (extract-calendar-year today)))) + (month-array calendar-month-name-array) + (completion-ignore-case t) + (month (cdr (assoc + (capitalize + (completing-read + "Month of death (name): " + (mapcar 'list (append month-array nil)) + nil t)) + (calendar-make-alist + month-array 1 'capitalize)))) + (last (calendar-last-day-of-month month year)) + (day (calendar-read + (format "Day of death (1-%d): " last) + '(lambda (x) (and (< 0 x) (<= x last)))))) + (list month day year)))) + (death-year (extract-calendar-year death-date)) + (start-year (calendar-read + (format "Starting year of Yahrzeit table (>%d): " + death-year) + '(lambda (x) (> x death-year)) + (int-to-string (1+ death-year)))) + (end-year (calendar-read + (format "Ending year of Yahrzeit table (>=%d): " + start-year) + '(lambda (x) (>= x start-year))))) + (list death-date start-year end-year))) + (message "Computing yahrzeits...") + (let* ((yahrzeit-buffer "*Yahrzeits*") + (h-date (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian death-date))) + (h-month (extract-calendar-month h-date)) + (h-day (extract-calendar-day h-date)) + (h-year (extract-calendar-year h-date))) + (set-buffer (get-buffer-create yahrzeit-buffer)) + (setq buffer-read-only nil) + (calendar-set-mode-line + (format "Yahrzeit dates for %s = %s" + (calendar-date-string death-date) + (let ((calendar-month-name-array + (if (hebrew-calendar-leap-year-p h-year) + calendar-hebrew-month-name-array-leap-year + calendar-hebrew-month-name-array-common-year))) + (calendar-date-string h-date nil t)))) + (erase-buffer) + (goto-char (point-min)) + (calendar-for-loop i from start-year to end-year do + (insert + (calendar-date-string + (calendar-gregorian-from-absolute + (hebrew-calendar-yahrzeit + h-date + (extract-calendar-year + (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian (list 1 1 i))))))) "\n")) + (goto-char (point-min)) + (set-buffer-modified-p nil) + (setq buffer-read-only t) + (display-buffer yahrzeit-buffer) + (message "Computing yahrzeits...done"))) + +(defun diary-hebrew-date () + "Hebrew calendar equivalent of date diary entry." + (format "Hebrew date (until sunset): %s" (calendar-hebrew-date-string date))) + +(defun diary-omer () + "Omer count diary entry. +Entry applies if date is within 50 days after Passover." + (let* ((passover + (calendar-absolute-from-hebrew + (list 1 15 (+ (extract-calendar-year date) 3760)))) + (omer (- (calendar-absolute-from-gregorian date) passover)) + (week (/ omer 7)) + (day (% omer 7))) + (if (and (> omer 0) (< omer 50)) + (format "Day %d%s of the omer (until sunset)" + omer + (if (zerop week) + "" + (format ", that is, %d week%s%s" + week + (if (= week 1) "" "s") + (if (zerop day) + "" + (format " and %d day%s" + day (if (= day 1) "" "s"))))))))) + +(defun diary-yahrzeit (death-month death-day death-year) + "Yahrzeit diary entry--entry applies if date is yahrzeit or the day before. +Parameters are DEATH-MONTH, DEATH-DAY, DEATH-YEAR; the diary entry is assumed +to be the name of the person. Date of death is on the *civil* calendar; +although the date of death is specified by the civil calendar, the proper +Hebrew calendar yahrzeit is determined. If `european-calendar-style' is t, the +order of the parameters is changed to DEATH-DAY, DEATH-MONTH, DEATH-YEAR." + (let* ((h-date (calendar-hebrew-from-absolute + (calendar-absolute-from-gregorian + (if european-calendar-style + (list death-day death-month death-year) + (list death-month death-day death-year))))) + (h-month (extract-calendar-month h-date)) + (h-day (extract-calendar-day h-date)) + (h-year (extract-calendar-year h-date)) + (d (calendar-absolute-from-gregorian date)) + (yr (extract-calendar-year (calendar-hebrew-from-absolute d))) + (diff (- yr h-year)) + (y (hebrew-calendar-yahrzeit h-date yr))) + (if (and (> diff 0) (or (= y d) (= y (1+ d)))) + (format "Yahrzeit of %s%s: %d%s anniversary" + entry + (if (= y d) "" " (evening)") + diff + (cond ((= (% diff 10) 1) "st") + ((= (% diff 10) 2) "nd") + ((= (% diff 10) 3) "rd") + (t "th")))))) + +(defun diary-rosh-hodesh () + "Rosh Hodesh diary entry. +Entry applies if date is Rosh Hodesh, the day before, or the Saturday before." + (let* ((d (calendar-absolute-from-gregorian date)) + (h-date (calendar-hebrew-from-absolute d)) + (h-month (extract-calendar-month h-date)) + (h-day (extract-calendar-day h-date)) + (h-year (extract-calendar-year h-date)) + (leap-year (hebrew-calendar-leap-year-p h-year)) + (last-day (hebrew-calendar-last-day-of-month h-month h-year)) + (h-month-names + (if leap-year + calendar-hebrew-month-name-array-leap-year + calendar-hebrew-month-name-array-common-year)) + (this-month (aref h-month-names (1- h-month))) + (h-yesterday (extract-calendar-day + (calendar-hebrew-from-absolute (1- d))))) + (if (or (= h-day 30) (and (= h-day 1) (/= h-month 7))) + (format + "Rosh Hodesh %s" + (if (= h-day 30) + (format + "%s (first day)" + ;; next month must be in the same year since this + ;; month can't be the last month of the year since + ;; it has 30 days + (aref h-month-names h-month)) + (if (= h-yesterday 30) + (format "%s (second day)" this-month) + this-month))) + (if (= (% d 7) 6);; Saturday--check for Shabbat Mevarhim + (cond ((and (> h-day 22) (/= h-month 6) (= 29 last-day)) + (format "Mevarhim Rosh Hodesh %s (%s)" + (aref h-month-names + (if (= h-month + (hebrew-calendar-last-month-of-year + h-year)) + 0 h-month)) + (aref calendar-day-name-array (- 29 h-day)))) + ((and (< h-day 30) (> h-day 22) (= 30 last-day)) + (format "Mevarhim Rosh Hodesh %s (%s-%s)" + (aref h-month-names h-month) + (if (= h-day 29) + "tomorrow" + (aref calendar-day-name-array (- 29 h-day))) + (aref calendar-day-name-array + (% (- 30 h-day) 7))))) + (if (and (= h-day 29) (/= h-month 6)) + (format "Erev Rosh Hodesh %s" + (aref h-month-names + (if (= h-month + (hebrew-calendar-last-month-of-year + h-year)) + 0 h-month)))))))) + +(defun diary-parasha () + "Parasha diary entry--entry applies if date is a Saturday." + (let ((d (calendar-absolute-from-gregorian date))) + (if (= (% d 7) 6);; Saturday + (let* + ((h-year (extract-calendar-year + (calendar-hebrew-from-absolute d))) + (rosh-hashannah + (calendar-absolute-from-hebrew (list 7 1 h-year))) + (passover + (calendar-absolute-from-hebrew (list 1 15 h-year))) + (rosh-hashannah-day + (aref calendar-day-name-array (% rosh-hashannah 7))) + (passover-day + (aref calendar-day-name-array (% passover 7))) + (long-h (hebrew-calendar-long-heshvan-p h-year)) + (short-k (hebrew-calendar-short-kislev-p h-year)) + (type (cond ((and long-h (not short-k)) "complete") + ((and (not long-h) short-k) "incomplete") + (t "regular"))) + (year-format + (symbol-value + (intern (format "hebrew-calendar-year-%s-%s-%s";; keviah + rosh-hashannah-day type passover-day)))) + (first-saturday;; of Hebrew year + (calendar-dayname-on-or-before 6 (+ 6 rosh-hashannah))) + (saturday;; which Saturday of the Hebrew year + (/ (- d first-saturday) 7)) + (parasha (aref year-format saturday))) + (if parasha + (format + "Parashat %s" + (if (listp parasha);; Israel differs from diaspora + (if (car parasha) + (format "%s (diaspora), %s (Israel)" + (hebrew-calendar-parasha-name (car parasha)) + (hebrew-calendar-parasha-name (cdr parasha))) + (format "%s (Israel)" + (hebrew-calendar-parasha-name (cdr parasha)))) + (hebrew-calendar-parasha-name parasha)))))))) + +(defvar hebrew-calendar-parashiot-names +["Bereshith" "Noah" "Lech L'cha" "Vayera" "Hayei Sarah" "Toledoth" + "Vayetze" "Vayishlah" "Vayeshev" "Mikketz" "Vayiggash" "Vayhi" + "Shemoth" "Vaera" "Bo" "Beshallah" "Yithro" "Mishpatim" + "Terumah" "Tetzavveh" "Ki Tissa" "Vayakhel" "Pekudei" "Vayikra" + "Tzav" "Shemini" "Tazria" "Metzora" "Aharei Moth" "Kedoshim" + "Emor" "Behar" "Behukkotai" "Bemidbar" "Naso" "Behaalot'cha" + "Shelah L'cha" "Korah" "Hukkath" "Balak" "Pinhas" "Mattoth" + "Masei" "Devarim" "Vaethanan" "Ekev" "Reeh" "Shofetim" + "Ki Tetze" "Ki Tavo" "Nitzavim" "Vayelech" "Haazinu"] + "The names of the parashiot in the Torah.") + +;; The seven ordinary year types (keviot) + +(defconst hebrew-calendar-year-Saturday-incomplete-Sunday + [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42] + 43 44 45 46 47 48 49 50] + "The structure of the parashiot. +Hebrew year starts on Saturday, is `incomplete' (Heshvan and Kislev each have +29 days), and has Passover start on Sunday.") + +(defconst hebrew-calendar-year-Saturday-complete-Tuesday + [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42] + 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Saturday, is `complete' (Heshvan and Kislev each +have 30 days), and has Passover start on Tuesday.") + +(defconst hebrew-calendar-year-Monday-incomplete-Tuesday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42] + 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Monday, is `incomplete' (Heshvan and Kislev each +have 29 days), and has Passover start on Tuesday.") + +(defconst hebrew-calendar-year-Monday-complete-Thursday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 (nil . 34) (34 . 35) (35 . 36) + (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Monday, is `complete' (Heshvan and Kislev each have +30 days), and has Passover start on Thursday.") + +(defconst hebrew-calendar-year-Tuesday-regular-Thursday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 (nil . 34) (34 . 35) (35 . 36) + (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Tuesday, is `regular' (Heshvan has 29 days and +Kislev has 30 days), and has Passover start on Thursday.") + +(defconst hebrew-calendar-year-Thursday-regular-Saturday + [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] 23 + 24 nil (nil . 25) (25 . [26 27]) ([26 27] . [28 29]) ([28 29] . 30) + (30 . 31) ([31 32] . 32) 33 34 35 36 37 38 39 40 [41 42] 43 44 45 46 47 48 + 49 50] + "The structure of the parashiot. +Hebrew year that starts on Thursday, is `regular' (Heshvan has 29 days and +Kislev has 30 days), and has Passover start on Saturday.") + +(defconst hebrew-calendar-year-Thursday-complete-Sunday + [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42] + 43 44 45 46 47 48 49 50] + "The structure of the parashiot. +Hebrew year that starts on Thursday, is `complete' (Heshvan and Kislev each +have 30 days), and has Passover start on Sunday.") + +;; The seven leap year types (keviot) + +(defconst hebrew-calendar-year-Saturday-incomplete-Tuesday + [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 nil 28 29 30 31 32 33 34 35 36 37 38 39 40 [41 42] + 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Saturday, is `incomplete' (Heshvan and Kislev each +have 29 days), and has Passover start on Tuesday.") + +(defconst hebrew-calendar-year-Saturday-complete-Thursday + [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 nil 28 29 30 31 32 33 (nil . 34) (34 . 35) (35 . 36) + (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Saturday, is `complete' (Heshvan and Kislev each +have 30 days), and has Passover start on Thursday.") + +(defconst hebrew-calendar-year-Monday-incomplete-Thursday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 nil 28 29 30 31 32 33 (nil . 34) (34 . 35) (35 . 36) + (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Monday, is `incomplete' (Heshvan and Kislev each +have 29 days), and has Passover start on Thursday.") + +(defconst hebrew-calendar-year-Monday-complete-Saturday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 nil (nil . 28) (28 . 29) (29 . 30) (30 . 31) (31 . 32) + (32 . 33) (33 . 34) (34 . 35) (35 . 36) (36 . 37) (37 . 38) (38 . 39) + (39 . 40) (40 . 41) ([41 42] . 42) 43 44 45 46 47 48 49 50] + "The structure of the parashiot. +Hebrew year that starts on Monday, is `complete' (Heshvan and Kislev each have +30 days), and has Passover start on Saturday.") + +(defconst hebrew-calendar-year-Tuesday-regular-Saturday + [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 nil (nil . 28) (28 . 29) (29 . 30) (30 . 31) (31 . 32) + (32 . 33) (33 . 34) (34 . 35) (35 . 36) (36 . 37) (37 . 38) (38 . 39) + (39 . 40) (40 . 41) ([41 42] . 42) 43 44 45 46 47 48 49 50] + "The structure of the parashiot. +Hebrew year that starts on Tuesday, is `regular' (Heshvan has 29 days and +Kislev has 30 days), and has Passover start on Saturday.") + +(defconst hebrew-calendar-year-Thursday-incomplete-Sunday + [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 28 nil 29 30 31 32 33 34 35 36 37 38 39 40 41 42 + 43 44 45 46 47 48 49 50] + "The structure of the parashiot. +Hebrew year that starts on Thursday, is `incomplete' (Heshvan and Kislev both +have 29 days), and has Passover start on Sunday.") + +(defconst hebrew-calendar-year-Thursday-complete-Tuesday + [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 + 23 24 25 26 27 28 nil 29 30 31 32 33 34 35 36 37 38 39 40 41 42 + 43 44 45 46 47 48 49 [50 51]] + "The structure of the parashiot. +Hebrew year that starts on Thursday, is `complete' (Heshvan and Kislev both +have 30 days), and has Passover start on Tuesday.") + +(defun hebrew-calendar-parasha-name (p) + "Name(s) corresponding to parasha P." + (if (arrayp p);; combined parasha + (format "%s/%s" + (aref hebrew-calendar-parashiot-names (aref p 0)) + (aref hebrew-calendar-parashiot-names (aref p 1))) + (aref hebrew-calendar-parashiot-names p))) + +(provide 'cal-hebrew) + +;;; cal-hebrew.el ends here -- 2.11.4.GIT