Basic chronology in the biblical period
From very early times, the Babylonian calendar was in wide use by the countries of the Near East. The structure, which was also used by the Israelites, was based on lunar months with … See more

Outside of Rabbinic Judaism, evidence shows a diversity of practice.
Karaite calendar
Karaites use the lunar month and the solar year, but the Karaite calendar differs from the current Rabbinic calendar in a number of ways. The … See more

Given the importance in Jewish ritual of establishing the accurate timing of monthly and annual times, some futurist writers and researchers have considered whether a "corrected" system of establishing the Hebrew date is required. The mean year of the current … See more

Early Zionist pioneers were impressed by the fact that the calendar preserved by Jews over many centuries in far-flung diasporas, as a … See more

Days
Based on the classic rabbinic interpretation of Genesis 1:5 ("There was evening and there was morning, one day"), a day in the rabbinic Hebrew calendar runs from sunset (the start of "the evening") to the … See more

Synodic month – the molad interval
A "new moon" (astronomically called a lunar conjunction and, in Hebrew, a molad) is the moment at which the sun and moon are aligned … See more

While imprisoned in Auschwitz, Jews made every effort to observe Jewish tradition in the camps, despite the monumental dangers in doing … See more