UTC offset

The UTC offset is the difference in hours and minutes between Coordinated Universal Time (UTC) and the standard time at a particular place.

By convention, every inhabited place in the world has a UTC offset that is a multiple of 15 minutes but the majority of offsets are stated in whole hours.

There are many cases where the national standard time uses a UTC offset that is not defined solely by longitude.

Although nominally a new time zone is established every 15 degrees east or west of the prime meridian (meaning a one-hour change in the time), in practice local geographical or political considerations may vary its application.

Several regions of the world use daylight saving time (DST) and the UTC offset during this season is typically obtained by adding one hour to local standard time.