TIME ZONE CONVERTER
Seattle to Istanbul
Time Converter
Convert Seattle, United States to Istanbul, Türkiye. Compare dates, seasonal differences and meeting hours.
Seattle is 10h or 11h behind Istanbul in 2026, depending on the date.
9 AM Seattle = 8 PM Istanbul
Selected date: November 10, 2026.
THE QUICK REFERENCE
CSVSeattle to Istanbul conversion table
November 10, 2026 · Date changes are marked.
View the full 24-hour table
| Seattle | Istanbul |
|---|---|
| 12:00 AM | 11:00 AM |
| 1:00 AM | 12:00 PM |
| 2:00 AM | 1:00 PM |
| 3:00 AM | 2:00 PM |
| 4:00 AM | 3:00 PM |
| 5:00 AM | 4:00 PM |
| 6:00 AM | 5:00 PM |
| 7:00 AM | 6:00 PM |
| 8:00 AM | 7:00 PM |
| 9:00 AM | 8:00 PM |
| 10:00 AM | 9:00 PM |
| 11:00 AM | 10:00 PM |
| Seattle | Istanbul |
|---|---|
| 12:00 PM | 11:00 PM |
| 1:00 PM | 12:00 AM +1 day |
| 2:00 PM | 1:00 AM +1 day |
| 3:00 PM | 2:00 AM +1 day |
| 4:00 PM | 3:00 AM +1 day |
| 5:00 PM | 4:00 AM +1 day |
| 6:00 PM | 5:00 AM +1 day |
| 7:00 PM | 6:00 AM +1 day |
| 8:00 PM | 7:00 AM +1 day |
| 9:00 PM | 8:00 AM +1 day |
| 10:00 PM | 9:00 AM +1 day |
| 11:00 PM | 10:00 AM +1 day |
Starting with the Istanbul working day
These examples start on 2026-11-10 in Istanbul.
09:00 Istanbul22:00 →Seattle · 2026-11-09
17:00 Istanbul06:00 →Seattle · 2026-11-10
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 Seattle to Istanbul throughout 2026
Keeping 09:00 on the Seattle clock produces 2 different destination clock/date answers in 2026. The ranges below use Seattle calendar dates, including transition days.
| Dates in Seattle · 2026 | Istanbul answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 766 dates | 20:00Same date | UTC−08:00 → UTC+03:00 | |
| Mar 8 – Oct 31238 dates | 19:00Same date | UTC−07:00 → UTC+03:00 | |
| Nov 1 – Dec 3161 dates | 20:00Same date | UTC−08:00 → UTC+03:00 |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does Seattle time become a different date in Istanbul?
Your complete source day: 2026-11-10. Each range shows which destination date to use.
Seattle · 2026-11-1000:00–13:00UTC−08:00
Istanbul · 2026-11-1011:00–24:00UTC+03:00 Same date
Seattle · 2026-11-1013:00–24:00UTC−08:00
Istanbul · 2026-11-1100:00–11:00UTC+03:00 Next day
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How Istanbul compares with Seattle throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
+11h
+10h
+11h
Seattle changes its UTC offset in 2026. Istanbul keeps one UTC offset this year.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | Istanbul vs Seattle |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 8 Mar 2026, 10:00 UTC | 11h ahead |
| 8 Mar 2026, 10:00 UTC | 1 Nov 2026, 09:00 UTC | 10h ahead |
| 1 Nov 2026, 09:00 UTC | 1 Jan 2027, 00:00 UTC | 11h ahead |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has Istanbul 10h ahead relative to Seattle. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with Seattle |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 8 Mar 2026, 10:00 UTC | 11h ahead |
| 1 Nov 2026, 09:00 UTC | 1 Jan 2027, 00:00 UTC | 11h ahead |
PLAN BEYOND A SINGLE DAY
Daily CSVSeattle–Istanbul working hours through 2026
Every date calculated with your working windows. 261 selected Seattle workdays; public holidays are not applied.
Least shared time0h
Most common0h
Most shared time0h
Days without a 60-min slot261 / 261
One fixed start time does not fit every working day.
Your working windows never overlap on the selected host workdays this year. Adjust working days, hours or duration above, or use different seasonal meeting times.
Seattle: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. Istanbul: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
TWO PLACES. ONE CONNECTION.
≈ 9,762 km apartAcross the map. Across the clock.
THE DETAILS THAT MATTER
Seattle to Istanbul: useful answers
Why is the Seattle to Istanbul difference sometimes 10 hours and sometimes 11 hours?
Seattle is 10h or 11h behind Istanbul in 2026, depending on the date. Seattle changes its UTC offset in 2026. Istanbul keeps one UTC offset this year.
Does the Seattle–Istanbul time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in Seattle on 2026-11-10 is 20:00 in Istanbul on 2026-11-10. This selected time stays on the same date in both places. Other times can cross midnight.
Can Seattle and Istanbul meet during working hours?
Your selected working windows have no shared time on 2026-11-10. The planner shows alternatives and how many minutes fall outside each person's working hours. Try another date or adjust the windows.
Related time-zone meanings and conversions
Choose the question you need answered
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology