Not all Americans will spring forward Sunday

daylight saving time beginning Sunday, most of the country will be trying to squeeze an extra hour of light into the day.

But not everyone is set to spring forward.

There are a few places, including Arizona and Hawaii, that do not observe the twice-a-year time change.

The reasons why vary, as some have opted out due to factors related to environment or geography.

What is daylight saving time?

Daylight saving time is a twice-annual time change that occurs in March and November.

Clocks are adjusted by one hour, with many Americans setting forward in March and back in November.

This year, daylight saving time will end Nov. 3 at 2 a.m. local time and won’t pick up again until March 9, 2025.

Where is DST not observed?

Hawaii and Arizona (with the exception of the Navajo Nation) do not particWith ipate in daylight saving time.

There are also five U.S. territories that do not participate.

● American Samoa

● Guam

● Northern Mariana Islands

● Puerto Rico

● U.S. Virgin Islands

Why don’t these regions observe?

There is plenty of sunshine to spare in these regions, with legislators citing Arizona’s desert climate and Hawaii’s proximity to the equator as reasons to remain on standard time.

After most of the U.S. adopted the Uniform Time Act, Arizona figured there wasn’t a good enough reason to adjust clocks to make sunset occur an hour later during the hottest months of the year, according to previous USA TODAY reporting.

Hawaii also sticks to standard time since there is not a lot of variance between hours of daylight during the year, USA TODAY reported.

American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands relative to the equator may be the reason why daylight saving time is not observed there.