Russia dropped two of its 11 time zones in 2010, then abolished DST a year later. It’s now one of a few places in the world that stays on summer hours all year.

The date and time displayed on your iPhone are determined by its time zone settings. If you're traveling to a different time zone or live in a country that observes Daylight Saving Time, it's easy ...

Daylight saving time officially starts on Sunday, March 9 at 2 a.m. Aside from losing an hour of sleep, the time change also means the daunting chore of manually changing clocks.