Ancient Hebrew vs Modern Jewish Calendar Comparisons

Many of the practices included on the contemporary Jewish calendars are the same as those used in ancient times, but there are many differences as well. Our website calendar strictly adheres to the ancient Hebrew Scriptural commands given by the Torah and the Old Testament biblical texts.

We do not use Babylonian names, such as Nissan or Tammuz, for the new moons (months). Instead, we use numbers, i.e., Chodesh Rishon (First New Moon) (first month), as are used in the Torah and the Old Testament.

We consider the date of creation, based on biblical creation timelines, to be 7520 years ago instead of 5781 years ago. One of our magazine articles examines and explains the Scriptural Creation Timeline. 

  • We do not include additional holy days to account for travel by people who might be in diaspora. We strictly adhere to the Scriptural time-periods and give no special considerations for travel time as they gave none in ancient times.
  • We put the new moon’s and all holy days on the calendar on their exact date, we make no adjustments to prevent them from falling on Shabbat (the Sabbath).
  • Our new moon festivity durations are 1-day events, never 2-day events.
  • Our calendar does not include any holy days that are not explicitly ordained as such in the Scriptures like: Hanukah, Purim, Second Passover, Lag B’ Omer, the Three Weeks or the 15th of Av.
  • We do not refer to the holy day of Yom Teruah as Rosh Hashana (Head of the Year, New Year’s Day). We use the Chodesh Rishon (First New Moon) (1st month) of the year Aviv (the month of Spring) as stated in the Torah and in Exodus 12:1-2 as the Head of the Months (start of the year).
  • There are no predetermined number of days in each month on the Ancient Hebrew Calendar. The month is based on the actual duration from one new moon to the next new moon.

      Ancient Hebrew Calendars, Jerusalem (Israel)

      Ancient Hebrew Calendar, Georgia (USA)


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