It's different every year.
Sundown
sunset
when you EAT !
Near the end of the service.
Yom Kipport occurs either at the end of Summer or the beginning of Fall, but there is no observance-related connection between Yom Kippur and any season.
No. Between Rosh Hashanah and Yom Kippur are the "10 Days of Awe". It's a period of reflection.
The end of Yom Kippur is the simplest of the calculations. All Jewish holidays end at sundown, so sundown local time is when the holiday ends. For the religious Jew, "end" is when three stars are visible in the evening sky. So check with your local weather station, and look for the three stars. Since Yom Kippur is the end of a fast, many will be watching intently to break the fast that they are observing.
not quick enough! In 2010 Yom Kippur starts on September 17th 2010, ending sunset September 18 2010
7:33 pm
7:35 pm; according to the Chabad Lubavitch of Ft. Lauderdale
Henry Kissinger
Yom Kippur ends shortly after local sunset. This year (2009), it will be on Monday, September 28. The exact time after sunset varies according to the custom and practice of each synagogue or community, as allowed within the bounds of Jewish law. This is exactly the type of question for which a rabbi is consulted.