Why does the range go beyond plus or minus 12 hours?

The offsets run from UTC-12:00 to UTC+14:00, a span of 26 hours, because the international date line is not a straight meridian. Some Pacific territories like Kiribati's Line Islands shifted to UTC+14:00 so the whole country shares one calendar day, which pushes the maximum past +12.

Is an offset the same as a timezone?

No. An offset is just a number of hours and minutes from UTC at one instant, while a timezone is a named region with rules that change the offset across the year and through history. The same offset can be shared by many timezones, and a timezone's offset changes when daylight saving starts and ends.

Does this account for daylight saving?

The territory list shows standard-time offsets. When a region observes daylight saving it temporarily moves to the next offset up, so for example UK time shifts from UTC+00:00 to UTC+01:00 in summer. Use the timezone lookup for the live DST-aware offset of a specific zone.

How is the local time column calculated?

The tool takes the current UTC instant from your browser, adds each offset, and reads off the resulting clock time. Because it derives from the live moment you loaded the page, every row shows the correct current wall-clock time for that offset.

UTC Offset Reference

Q: What are half-hour and quarter-hour offsets?

A few regions use offsets that are not a whole number of hours, such as India at UTC+05:30, Iran at UTC+03:30, Nepal at UTC+05:45, and the Chatham Islands at UTC+12:45. These trip up code that assumes offsets are whole hours, so always store and compute offsets in minutes.

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What this tool is for

This reference lays out every UTC offset in use, from the far western Pacific at UTC-12:00 to the far eastern Pacific at UTC+14:00, alongside the countries and territories that observe each one. It is built for anyone reasoning about time across regions: scheduling calls, configuring servers, or sanity-checking date logic.

How it works

An offset is simply the signed number of hours and minutes a location’s clock runs ahead of or behind UTC at a given moment. The table stores each offset in minutes so it can represent half-hour and quarter-hour zones precisely, then derives the live local time by adding the offset to the current UTC instant from your browser.

The range deliberately exceeds twelve hours in both directions. The international date line bends around national borders, and territories such as Kiribati’s Line Islands chose UTC+14:00 so the entire country keeps one calendar day. That is why the span is 26 hours wide rather than 24.

Tips and notes

Never assume offsets are whole hours. India sits at UTC+05:30, Nepal at UTC+05:45, and the Chatham Islands at UTC+12:45, so always store offsets in minutes and let a proper date library handle arithmetic. Remember too that the territory list reflects standard time: during daylight saving a region shifts to the next offset up, which is why a single country can appear to move between rows across the year.