Time difference between Guam and London
Compare the current local time in Guam and London, see when your working hours overlap, and convert any specific hour between the two timezones.
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Convert a specific time
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Working-hours overlap
When Guam's 9:00–17:00 business hours overlap with London's.
Guam working hours
London working hours
Overlap (both working)
🇬🇺 Guam
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🇬🇧 London
Scheduling across Guam and London
Scheduling between Guam and London is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 1 hour between Guam closing at 17:00 local and London opening at 09:00 local. Practical bridging slots: an early London start at 08:00 (catching Guam just at close, 17:00), or a late Guam call at 18:00 (catching London at opening, 09:00).
Quick reference
| 🇬🇺 Guam | 🇬🇧 London | In London it's… |
|---|---|---|
| 06:00 — Early morning | — | — |
| 09:00 — Start of work | — | — |
| 12:00 — Lunchtime | — | — |
| 15:00 — Mid-afternoon | — | — |
| 17:00 — End of work | — | — |
| 20:00 — Evening | — | — |
Daylight saving status
🇬🇺 Guam
Guam does not observe daylight saving time. The local offset is fixed year-round.
🇬🇧 London
Currently in BST (daylight saving)
Clocks go back to GMT
on Sunday 25 October 2026