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hebcal-3.11.tar.gz 2012-03-31 226.6 kB
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Hebcal

This is Hebcal, a perpetual Jewish calendar, implemented as a command-line program.

Changes in 3.11

  • If a yahrzeit would fall on 30 Cheshvan in a short year, advance observance to 1 Kislev. If a yahrzeit would fall on Kislev 30 in a short year, advance observance to 1 Tevet.

  • Allow Ta'anit Bechorot (Fast of the Firstborn) to fall on a Friday. When a fast day falls on Friday, we do in fact observe the fast on Friday, even though Shabbat follows immediately. Also, in some years, Asarah Betevet (Tenth of Tevet) falls on Friday and is observed on that day.

It is only in years when the date of the fast falls on Shabbat that the fast is moved: Ta'anit Ester (Fast of Esther) and Ta'anit Bekhorim are moved back to Thursday. Tsom Gedalyah (Fast of Gedaliah) and Shiv'ah Asar Betammuz (Seventeeth of Tammuz) are moved ahead to Sunday. Tish'ah Be'av (Ninth of Av), a full-day fast, is moved ahead to Saturday night. Asarah Betevet does not fall on Shabbat.

See also

For more information see http://hebcal.sf.net/

Source: README.mkd, updated 2012-03-31