Convert UTC to Seattle time: when it is 12:00 UTC it is 04:00 in Seattle in January and 05:00 in July. Seattle is on UTC−08:00 in standard time and UTC−07:00 in daylight saving time. The full 24-hour conversion table is below, and the UTC converter does the conversion live for any date and time.
Try the tool: UTC Converter — convert any UTC time to Seattle time, or Seattle time back to UTC, with the offset shown.
Current UTC time and the time in Seattle
UTC is the world's reference time — it never observes daylight saving, and every other time zone is defined as an offset from it. The table shows four reference instants and what time they are in Seattle, in January and in July.
| UTC | Seattle in January | Seattle in July |
|---|---|---|
| 00:00 | 16:00 | 17:00 |
| 06:00 | 22:00 | 23:00 |
| 12:00 | 04:00 | 05:00 |
| 18:00 | 10:00 | 11:00 |
If the January and July columns are the same, Seattle's offset does not change — it does not observe daylight saving. If they differ by an hour, that hour is daylight saving, and the Seattle DST 2026 page gives the exact dates. The world clock shows the current time in Seattle live, and the time in Seattle page explains the city's time zone in full.
Seattle's offset from UTC
Seattle is on UTC−08:00 in winter and UTC−07:00 in summer, when daylight saving is in effect.
| Period | Offset | In effect |
|---|---|---|
| Standard time | UTC−08:00 | Late autumn to early spring |
| Daylight saving time | UTC−07:00 | From 8 March 2026 to 1 November 2026 in 2026 |
| Right now (11 November 2026) | UTC−08:00 | Standard time is in effect |
The offset is the only number you need. To convert UTC to Seattle time, add the offset. To convert Seattle time to UTC, subtract it. The offset to use is the one in effect on the date you are converting — not today's offset, and not the offset you remember from last summer. The converter on this page's tool does that for you: enter the UTC time and the date, and it looks up the offset from the IANA database for that date.
UTC to Seattle — full conversion table
Every hour of the day, converted from UTC to Seattle local time. The January column uses the winter offset (UTC−08:00); the July column uses the summer offset (UTC−07:00). Where the columns differ by an hour, that is daylight saving.
| UTC | Seattle (January) | Seattle (July) |
|---|---|---|
| 00:00 | 16:00 | 17:00 |
| 01:00 | 17:00 | 18:00 |
| 02:00 | 18:00 | 19:00 |
| 03:00 | 19:00 | 20:00 |
| 04:00 | 20:00 | 21:00 |
| 05:00 | 21:00 | 22:00 |
| 06:00 | 22:00 | 23:00 |
| 07:00 | 23:00 | 00:00 |
| 08:00 | 00:00 | 01:00 |
| 09:00 | 01:00 | 02:00 |
| 10:00 | 02:00 | 03:00 |
| 11:00 | 03:00 | 04:00 |
| 12:00 | 04:00 | 05:00 |
| 13:00 | 05:00 | 06:00 |
| 14:00 | 06:00 | 07:00 |
| 15:00 | 07:00 | 08:00 |
| 16:00 | 08:00 | 09:00 |
| 17:00 | 09:00 | 10:00 |
| 18:00 | 10:00 | 11:00 |
| 19:00 | 11:00 | 12:00 |
| 20:00 | 12:00 | 13:00 |
| 21:00 | 13:00 | 14:00 |
| 22:00 | 14:00 | 15:00 |
| 23:00 | 15:00 | 16:00 |
Use the table by finding the UTC hour in the first column and reading across. Note the date change: a UTC time late in the evening is the next day in Seattle when the offset is positive and large — 22:00 UTC is 14:00 the next day in Seattle in January — and a UTC time early in the morning is the previous day in Seattle when the offset is negative. The date matters as much as the time: a meeting at 02:00 UTC on Tuesday is a Monday evening meeting in the Americas.
When the offset changes
The offset changes twice a year. In 2026 the clocks go forward on Sunday, 8 March 2026 and back on Sunday, 1 November 2026; in 2027 the clocks go forward on Sunday, 14 March 2027 and back on Sunday, 7 November 2027. The offset moves from UTC−08:00 to UTC−07:00 and back again. On the change days themselves, the hour from 02:00 to 03:00 does not exist in spring and happens twice in autumn, so do not schedule anything for 02:30 on those dates.
Seattle time to UTC
The reverse conversion — Seattle local time back to UTC — is the same table read backwards. Six examples, for January:
| Seattle local | UTC (January) | UTC (July) |
|---|---|---|
| 00:00 | 08:00 | 07:00 |
| 06:00 | 14:00 | 13:00 |
| 09:00 | 17:00 | 16:00 |
| 12:00 | 20:00 | 19:00 |
| 15:00 | 23:00 | 22:00 |
| 21:00 | 05:00 | 04:00 |
The reverse table is the one to use when you are telling someone in another time zone when something happens in Seattle. A flight that departs Seattle at 09:00 local time departs at 17:00 UTC in January — and that UTC time is what the airline's systems, the air traffic controllers and the arrival airport all use. The flight time calculator works out the arrival time as well, including the date change.
Scheduling with UTC-based teams
Teams that work in UTC — software teams, aviation, shipping, scientific collaborations — schedule in UTC precisely because it never changes. If your team works in UTC, the time in Seattle is UTC plus UTC−08:00 in January and UTC plus UTC−07:00 in July, and the only question is which of those applies on the meeting date. Put the UTC time in the invitation as well as the local time, and nobody has to convert.
The practical working hours for a UTC-based team and Seattle are: 09:00–17:00 in Seattle is 17:00–01:00 UTC in January and 16:00–00:00 UTC in July. A meeting at 14:00 UTC is 06:00 in Seattle in January — inside the working day — and 07:00 in July. A meeting at 08:00 UTC is 00:00 in Seattle in January, which is before the working day starts. The meeting planner finds the overlap for any two cities, and the meeting time finder finds it for a whole team.
Frequently asked questions
What time is it in Seattle when it is 12:00 UTC?
It is 04:00 in January and 05:00 in July. The difference is daylight saving.
What is Seattle's offset from UTC?
Seattle is on UTC−08:00 in standard time and UTC−07:00 in daylight saving time.
How do I convert UTC to Seattle time?
Add Seattle's offset to the UTC time: UTC−08:00 in January, UTC−07:00 in July. The UTC converter does it for any date, and the table above covers every hour.
Does Seattle observe daylight saving time?
Yes — in 2026 the clocks go forward on Sunday, 8 March 2026 and back on Sunday, 1 November 2026.
What date is it in Seattle when it is 22:00 UTC?
It is the next day: 22:00 UTC is 14:00 the following day in Seattle in January (and 15:00 in July). The date change is the part of UTC conversion people most often forget.
What time zone is Seattle in?
Seattle is in the IANA time zone America/Los_Angeles, in United States. See the time in Seattle page for the full explanation.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's UTC converter and world clock — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.