GMTtoPSTGreenwich Mean Time to Pacific Standard Time
GMT
Greenwich Mean Time (GMT)PST
Pacific Standard Time (PDT)Mutual Working Window: 1 Overlapping Hour
Recommended calling window between GMT and PST
Both locations share 1 overlapping standard business hour (9:00 AM – 5:00 PM). This is the premier window for real-time video conferences, corporate calls, and instant collaboration without outside-hours disruption.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between GMT and PST.
| GMT Time (Greenwich Mean Time) | PST Time (Pacific Standard Time) | Status & Recommendation |
|---|---|---|
| 00:00AM | 17:00PM-1 day | ⚪ Outside Work Hours |
| 01:00AM | 18:00PM-1 day | ⚪ Outside Work Hours |
| 02:00AM | 19:00PM-1 day | ⚪ Outside Work Hours |
| 03:00AM | 20:00PM-1 day | ⚪ Outside Work Hours |
| 04:00AM | 21:00PM-1 day | ⚪ Outside Work Hours |
| 05:00AM | 22:00PM-1 day | ⚪ Outside Work Hours |
| 06:00AM | 23:00PM-1 day | ⚪ Outside Work Hours |
| 07:00AM | 00:00AM | ⚪ Outside Work Hours |
| 08:00AM | 01:00AM | ⚪ Outside Work Hours |
| 09:00AM | 02:00AM | ⚪ Outside Work Hours |
| 10:00AM | 03:00AM | ⚪ Outside Work Hours |
| 11:00AM | 04:00AM | ⚪ Outside Work Hours |
| 12:00PM | 05:00AM | ⚪ Outside Work Hours |
| 13:00PM | 06:00AM | ⚪ Outside Work Hours |
| 14:00PM | 07:00AM | 🟡 Feasible (Shoulder Hour) |
| 15:00PM | 08:00AM | 🟡 Feasible (Shoulder Hour) |
| 16:00PM | 09:00AM | 🟢 Ideal Meeting Window |
| 17:00PM | 10:00AM | ⚪ Outside Work Hours |
| 18:00PM | 11:00AM | ⚪ Outside Work Hours |
| 19:00PM | 12:00PM | ⚪ Outside Work Hours |
| 20:00PM | 13:00PM | ⚪ Outside Work Hours |
| 21:00PM | 14:00PM | ⚪ Outside Work Hours |
| 22:00PM | 15:00PM | ⚪ Outside Work Hours |
| 23:00PM | 16:00PM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between GMT and PST?
PST is 7 hours behind GMT. When it is 12:00 PM (noon) in GMT, the current synchronized time in PST is 5:00 AM.
What are the overlapping working hours between GMT and PST?
There are 1 overlapping standard business hours (9:00 AM – 5:00 PM) between GMT and PST. The optimal scheduling window is 4:00 PM – 5:00 PM in GMT (9:00 AM – 10:00 AM in PST).
Does daylight saving time affect the conversion between GMT and PST?
Yes. Both GMT and PST observe seasonal daylight saving time shifts.
What regions and major cities observe GMT and PST?
GMT (Greenwich Mean Time) is primarily observed across Western Europe & West Africa (United Kingdom, Ireland, Portugal, Ghana) (key hubs include London, Dublin, Lisbon, Accra). PST (Pacific Standard Time) is observed across Western North America (US West Coast & British Columbia) (key hubs include Los Angeles, San Francisco, Seattle, Vancouver).
What is 9:00 AM GMT in PST?
9:00 AM in GMT corresponds to 2:00 AM in PST. You can cross-reference every hour of the day in the 24-hour visual schedule table above.
Which time zone is ahead, GMT or PST?
GMT is ahead by 7 hours.