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Explore the history and calendar calculations behind the monthly holiday.

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A detailed look at the Jewish calendar, lunar cycle, and how the months are determined.
What's the big deal about Rosh Chodesh, the "New Moon," when the moon is hardly visible; shouldn't we celebrate instead the middle of the month when the moon is round and perfect?
Women and Rosh Chodesh
Why is Rosh Chodesh, the holiday that marks the entry of a new Jewish month, considered a "women's holiday"?
The practice of the Sanhedrin in ancient times is the reason for Rosh Chodesh being one or two days -- depending on the month.
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