WASHINGTON Leaves swirl. Autumn's chill is in the air. It must be time to set the clock back.
The official change to standard time occurs at 2 a.m. Sunday, though most folks will change their clocks Saturday night.
Some states and territories don't observe daylight-saving time and thus won't have to worry about changing their clocks back. Those are Arizona, Hawaii, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.