Time Zone Offset Calculator
Calculate the time in any other part of the world relative to yours. Enter UTC offset values to find the time difference for scheduling calls, flights, or meetings.
World Time Zones
UTC — The Reference
UTC (Coordinated Universal Time) is the global time reference. GMT (Greenwich Mean Time) is effectively the same as UTC+0 in winter. The UK moves to UTC+1 (BST) in summer. Always specify UTC offset for international scheduling to avoid confusion.
Daylight Saving Time
DST shifts clocks forward 1 hour in spring and back in autumn. Not all countries observe DST — China, Japan, India, and most of Africa do not. DST transitions can temporarily change the time difference between two locations by 1 hour.
Best Meeting Times
For UK–US calls: 2–4pm UK (9–11am Eastern, 6–8am Pacific). For UK–Asia: 9–11am UK (4–6pm Singapore/HK) or early evening UK. There's no perfect overlap for UK–Auckland meetings — someone always gets an unsociable time.
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