Yom Kippur also known as Day of Atonement, is the holiest day of the year for the Jewish people. Its central themes are atonement and repentance. Jewish people traditionally observe this holy day with an approximate 25-hour period of fasting and intensive prayer, often spending most of the day in synagogue services.
It is considered impolite to eat in public on Yom Kippur or to sound music or to drive a motor vehicle. There is no legal prohibition on any of these, but in practice such actions are universally avoided in Israel during Yom Kippur, except for emergency services.