If you are in Israel and your clock indicates that it is 6:30 a.m., you have to move the time forward one hour in order to be on time with the rest of the country. "Summer time" (Daylight Savings Time) will end at 2 a.m. Sunday morning, October 5, several days before the beginning of the Yom Kippur fast.
The United States already has moved its clocks forward, and European nations will follow suit this Sunday morning.