GST to Seattle time conversion
Seattle is 11 hours behind GST. After the next clock change (): Seattle is 12 hours behind GST.
Time difference with your location
GST is 4 hours ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in GST to convert it to Seattle on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · GST → Seattle
This table converts each hour in GST to Seattle on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| GST | Seattle | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 13:001:00 PM -1 day | |
| 01:001:00 AM | 14:002:00 PM -1 day | |
| 02:002:00 AM | 15:003:00 PM -1 day | |
| 03:003:00 AM | 16:004:00 PM -1 day | |
| 04:004:00 AM | 17:005:00 PM -1 day | |
| 05:005:00 AM | 18:006:00 PM -1 day | |
| 06:006:00 AM | 19:007:00 PM -1 day | |
| 07:007:00 AM | 20:008:00 PM -1 day | |
| 08:008:00 AM | 21:009:00 PM -1 day | |
| 09:009:00 AM | 22:0010:00 PM -1 day | |
| 10:0010:00 AM | 23:0011:00 PM -1 day | |
| 11:0011:00 AM | 00:0012:00 AM | |
| 12:0012:00 PM | 01:001:00 AM | |
| 13:001:00 PM | 02:002:00 AM | |
| 14:002:00 PM | 03:003:00 AM | |
| 15:003:00 PM | 04:004:00 AM | |
| 16:004:00 PM | 05:005:00 AM | |
| 17:005:00 PM | 06:006:00 AM | |
| 18:006:00 PM | 07:007:00 AM | |
| 19:007:00 PM | 08:008:00 AM | |
| 20:008:00 PM | 09:009:00 AM | |
| 21:009:00 PM | 10:0010:00 AM | |
| 22:0010:00 PM | 11:0011:00 AM | |
| 23:0011:00 PM | 12:0012:00 PM |
Quick conversion examples
These examples use GST (UTC+4) and Seattle (UTC-7); choosing a date applies the local clock changes.
Conversion formula: Seattle = GST − 11h · GST − 12h.
| GST | Seattle |
|---|---|
| 6:00 AM GST | = 7:00 PM Seattle (-1 day) |
| 7:00 AM GST | = 8:00 PM Seattle (-1 day) |
| 8:00 AM GST | = 9:00 PM Seattle (-1 day) |
| 9:00 AM GST | = 10:00 PM Seattle (-1 day) |
| 10:00 AM GST | = 11:00 PM Seattle (-1 day) |
| 12:00 PM GST | = 1:00 AM Seattle |
| 3:00 PM GST | = 4:00 AM Seattle |
| 5:00 PM GST | = 6:00 AM Seattle |
| 6:00 PM GST | = 7:00 AM Seattle |
| 8:00 PM GST | = 9:00 AM Seattle |
Overlapping meeting hours
The 08:00–18:00 working days in GST and Seattle do not overlap on 2026-10-21.
Clock changes on both sides, 2026–2028
GST and Seattle have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | GST | Seattle |
|---|---|---|
| 2026 | No clock changes; UTC+4 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2027 | No clock changes; UTC+4 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2028 | No clock changes; UTC+4 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
At the start of 2026, Seattle is 12 hours behind GST. The difference changes during the following periods.
- From 2026-03-08 14:00 GST until 2026-11-01 13:00 GST, Seattle is 11 hours behind GST.
- From 2027-03-14 14:00 GST until 2027-11-07 13:00 GST, Seattle is 11 hours behind GST.
- From 2028-03-12 14:00 GST until 2028-11-05 13:00 GST, Seattle is 11 hours behind GST.
Frequently asked questions
What time is 9 AM GST in Seattle?
9:00 AM GST = 10:00 PM Seattle (-1 day), using UTC+4 and UTC-7. Choose a date above for the seasonal local time.
Does the time difference between GST and Seattle change during the year?
Yes. During 2026–2028: Seattle is 12 hours behind GST; Seattle is 11 hours behind GST. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in Seattle?
Read the Seattle clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between GST and Seattle?
The 08:00–18:00 working days in GST and Seattle do not overlap.
What is the time difference between GST and Seattle now?
Right now, Seattle is 11 hours behind GST. Conversion formula: Seattle = GST − 11h · GST − 12h.