GMT to PST Time ConverterFind the Best Time
Convert Greenwich Mean Time to Pacific Time instantly.
Scroll the timeline to check any hour of the day.
Greenwich Mean Time
GMT
11:11
Pacific Time
PST
3:11
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the GMT to PST time difference works
PST is 8 hours behind GMT. Greenwich Mean Time (GMT) is the fixed UTC+0 reference time, used by the United Kingdom and Ireland in winter. Pacific Time (PST) is the time zone of the US West Coast. For example, 9:00 AM GMT is 1:00 AM PST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
8 hours
Daylight saving
PST only
GMT offset
UTC+0
PST offset
UTC-8
GMT to PST conversion chart
| Greenwich Mean Time (GMT) | Pacific Time (PST) |
|---|---|
| 12:00 AM | 4:00 PM -1 day |
| 1:00 AM | 5:00 PM -1 day |
| 2:00 AM | 6:00 PM -1 day |
| 3:00 AM | 7:00 PM -1 day |
| 4:00 AM | 8:00 PM -1 day |
| 5:00 AM | 9:00 PM -1 day |
| 6:00 AM | 10:00 PM -1 day |
| 7:00 AM | 11:00 PM -1 day |
| 8:00 AM | 12:00 AM |
| 9:00 AM | 1:00 AM |
| 10:00 AM | 2:00 AM |
| 11:00 AM | 3:00 AM |
| 12:00 PM | 4:00 AM |
| 1:00 PM | 5:00 AM |
| 2:00 PM | 6:00 AM |
| 3:00 PM | 7:00 AM |
| 4:00 PM | 8:00 AM |
| 5:00 PM | 9:00 AM |
| 6:00 PM | 10:00 AM |
| 7:00 PM | 11:00 AM |
| 8:00 PM | 12:00 PM |
| 9:00 PM | 1:00 PM |
| 10:00 PM | 2:00 PM |
| 11:00 PM | 3:00 PM |
Cities in each time zone
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
Pacific Time (PST)
Los AngelesSan FranciscoSeattleSan DiegoLas VegasPortland
GMT to PST questions
Is PST ahead of or behind GMT?
PST is 8 hours behind GMT. So 9:00 AM GMT is 1:00 AM PST, and 5:00 PM GMT is 9:00 AM PST.
What time is it in PST when it is 12:00 PM GMT?
When it is 12:00 PM (noon) GMT in Greenwich Mean Time, it is 4:00 AM PST in Pacific Time.
How many hours difference is there between GMT and PST?
There is a 8 hours difference. Pacific Time (PST) runs 8 hours behind Greenwich Mean Time (GMT).
Do GMT and PST observe daylight saving time?
Pacific Time observes daylight saving time but Greenwich Mean Time does not, so the difference between them changes by an hour twice a year. The United Kingdom and Ireland use GMT only in winter; from late March to late October they switch to British Summer Time (BST), one hour ahead of GMT.
What is the best time to schedule a meeting between GMT and PST?
A standard 9-to-5 workday in Greenwich Mean Time and Pacific Time does not overlap, so pick the early morning in the later zone or the late evening in the earlier zone.
Which cities use GMT and PST?
Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester. Pacific Time (PST) covers cities such as Los Angeles, San Francisco, Seattle, San Diego, Las Vegas, Portland.