The return of standard time on Halloween (search) means drivers will have to exercise extra caution for trick-or-treating youngsters in Sunday's early darkness.

For most of the country, daylight-saving time (search) was ending at 2 a.m. Sunday, stealing an hour of light from evening to morning as people moved their clocks back an hour.

Daylight-saving time returns the first Sunday in April.

The change does not affect Arizona, Hawaii or the portions of Indiana in the Eastern time zone, which do not observe daylight time.