GMT to Seattle Time Converter
PST is 8 hours behind GMT. 9:00 AM GMT = 1:00 AM PST.
PST is 8 hours behind GMT at the moment. To convert GMT to Seattle Time, subtract 8 hours from the GMT time: 9:00 AM GMT = 1:00 AM PST.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. Seattle Time (Seattle time) is used in Seattle, USA.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
GMT to Seattle Time time conversion table
GMT to Seattle Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | Seattle Time |
|---|---|
| 12:00 AM | 4:00 PM−1 |
| 1:00 AM | 5:00 PM−1 |
| 2:00 AM | 6:00 PM−1 |
| 3:00 AM | 7:00 PM−1 |
| 4:00 AM | 8:00 PM−1 |
| 5:00 AM | 9:00 PM−1 |
| 6:00 AM | 10:00 PM−1 |
| 7:00 AM | 11:00 PM−1 |
| GMT | Seattle Time |
|---|---|
| 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 |
| GMT | Seattle Time |
|---|---|
| 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 |
Conversion table from GMT to Seattle Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Seattle Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert GMT to Seattle Time
Subtract 8 hours from the GMT time to get Seattle Time.
Example: 9:00 AM GMT = 1:00 AM PST.
Across midnight: 1:00 AM GMT = 5:00 PM PST (previous day). The date changes, so always check the day as well as the hour.
Time difference between GMT and Seattle Time
The time difference between GMT and Seattle Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: Seattle Time is 8 hours behind of GMT.
- 8 Mar 2026 – 31 Oct 2026: Seattle Time is 7 hours behind of GMT.
- 1 Nov 2026 – 31 Dec 2026: Seattle Time is 8 hours behind of GMT.
GMT and Seattle Time during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- Seattle Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from PST (UTC−8) to PDT (UTC−7).
Best time for a meeting between GMT and Seattle Time
GMT and Seattle Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM GMT, which is 7:00 AM PST.
GMT to Seattle Time FAQ
What is the time difference between GMT and Seattle Time?
Right now PST is 8 hours behind GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM GMT in Seattle Time?
9:00 AM GMT is 1:00 AM PST.
What is 12 PM (noon) GMT in Seattle Time?
12:00 PM GMT is 4:00 AM PST.
Is Seattle Time ahead of or behind GMT?
PST is 8 hours behind GMT, so it is earlier in Seattle Time than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
Does Seattle Time change for daylight saving time?
Yes. Seattle Time next changes on 14 Mar 2027, when clocks go forward one hour from PST to PDT.
What is the best time for a meeting between GMT and Seattle Time?
GMT and Seattle Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM GMT, which is 7:00 AM PST.
Related conversions
Convert Seattle Time to GMT
Convert GMT to other time zones
Convert other time zones to Seattle Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.