Praying for God's forgiveness and fasting.
Jews in California celebrate Yom Kippur the same way that Jews the world over celebrate Yom Kippur.
The Jews celebrate Yom Kippur and Hanukkah.
Jews live all over the world, and they're the ones that celebrate Yom Kippur.
Jewish Mexicans celebrate Yom Kippur.
Yom Kippur
None - Yom Kippur is a Jewish fast day.
Jews
Jews don't have churches - they have synagogues, and yes, they go to synagogue during Yom Kippur.
Yom Kippur
No.
The holiday in question is YOM KIPPUR.
Jews observe the holiday of Yom Kippur, a 25 hour fast with no food or water and a day of prayer.