WASHINGTON — Yom Kippur is the holiest day on the Jewish calendar and also one of the most somber commemorations of the year.

It marks the end of the "Days of Awe," a 10-day period that begins , the other main High Holy Day which celebrates the Jewish New Year.

Yom Kippur in English means "Day of Atonement" and focuses on repentance and asking forgiveness for wrongs that may have been committed over the past year.

Jewish adults observing the holiday typically will fast for around 25 hours (starting at sundown the night before). However, that anyone whose health may be at risk by fasting is exempt and should still eat and drink water on Yom Kippur.

The is based primarily on the moon while the Gregorian calendar is based on the sun, which is why it can feel like the holidays are sometime

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