This table lists every UTC offset currently in use, from UTC−12:00 to UTC+14:00, with the time at each and a representative place. Your own offset is highlighted. The range spans twenty-six hours rather than twenty-four, which surprises people until you realise that the date line is a political boundary, not a straight one.
Why the range exceeds 24 hours
Some Pacific nations chose offsets that put them first into each new day. Kiribati's Line Islands sit at UTC+14:00, while Baker Island sits at UTC−12:00, so at some instants three different calendar dates exist on Earth at once. The full story is in the UTC offsets guide.
Offsets shift, zones persist
Places observing daylight saving move up one row for part of the year. That is why an offset alone never identifies a location, and why a zone identifier is the right thing to record. See half-hour and quarter-hour zones for the offsets that are not whole hours at all.