At sundown.
Yom Kippur is not a person or a country, it is a holiday. The Egyptians chose to invade Israel on Yom Kippur because of its solemnity. They expected the Israelis to be unprepared on Yom Kippur, which was indeed the case.
6:40 pm
7:46pm
Yom Kippur began at sundown on Friday October 7th, 2011. In Los Angeles, sundown was at approximately 6:30 PM.
It's either in September or October.
Yom Kippur begins just before sunset on Sunday, September 27th, and ends just after sunset the following evening.
The pronounciation of yom kippur is yum-kipp-her.
Yom Kippur
Jewish Mexicans do Yom Kippur.
The Day of Atonement is Yom Kippur (Leviticus ch.23). This is the holiest day in Judaism and the day where even secular Jews attend synagogue. On Yom Kippur, Jewish people fast from all food and drinks for a complete 25hrs, starting just before sunset the previous day.
Shortly before sunset Friday night 9/17.
First, we want to make sure that you don't think that Yom Kippur is a month. Yom Kippur is a single day, in the Hebrew month of Tishrei. Elul (אלול) is the month preceding Tishrei and all the days in it, including Yom Kippur.