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Adar is the 6th month of the civil year or the 12th month of the ecclesiastical year in the Jewish calendar. In leap years, an extra month called Adar Sheni (Second Adar) is added, and the holidays that would normally fall in Adar are postponed to this second month. Adar Rishon (First Adar) is the intercalary month that precedes Adar Sheni in leap years. The Jewish calendar uses lunar cycles to determine its months, which is why it requires adjustments like leap months to align with the solar year. Notable holidays in Adar include the Fast of Esther and Purim.12345

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