Yahrzeit
The annual anniversary of the death of a person is called the Yahrzeit and is traditionally observed based on the Hebrew calendar. The yahrzeit is observed by lighting a twenty-four hour candle the evening before the day of the yahrzeit, and most people recite the Kaddish and take a few moments of introspection and thought. Most congregations recite the name of the deceased whose yahrzeit is being observed during the Shabbat services closest to the date.
Yahrzeit Calendar for Your Loved One