Time difference between Greenwich and Perth
Compare the current local time in Greenwich and Perth, 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 Greenwich's 9:00–17:00 business hours overlap with Perth's.
Greenwich working hours
Perth working hours
Overlap (both working)
🇺🇸 Greenwich
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🇦🇺 Perth
Scheduling across Greenwich and Perth
Scheduling between Greenwich and Perth is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 4 hours between Perth closing at 17:00 local and Greenwich opening at 09:00 local. Practical bridging slots: an early Greenwich start at 05:00 (catching Perth just at close, 17:00), or a late Perth call at 21:00 (catching Greenwich at opening, 09:00).
Quick reference
| 🇺🇸 Greenwich | 🇦🇺 Perth | In Perth 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
🇺🇸 Greenwich
Currently in EDT (daylight saving)
Clocks go back to EST
on Sunday 1 November 2026
🇦🇺 Perth
Perth does not observe daylight saving time. The local offset is fixed year-round.