Osaka to Washington Time Difference
Washington is 13 hours behind Osaka. When it's 10:33:48 PM in Osaka, it's 09:33:48 AM in Washington.
How Many Hours Behind Is Washington From Osaka?
Washington is 13 hours behind Osaka. So Osaka is 13 hours ahead of Washington looking the other way — the same gap, described from the other end.
In practice that means a working day in Osaka starts when it is already 8:00 PM the previous day in Washington. The gap is not fixed all year: it becomes 14 hours on Sunday, November 1, 2026, when Washington changes its clocks.
Best Time to Call Osaka and Washington
Standard 9-to-5 hours in Osaka and Washington never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 11:00 AM in Osaka, which is 6:00 PM to 10:00 PM in Washington.
both at work Osaka only Washington only neither — hours shown along the strip are Osaka local time.
Convert a Specific Time
Pick any date and time in Osaka to see the exact equivalent in Washington.
Common Times Converted
Osaka time on the left, Washington time on the right.
Osaka to Washington: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Osaka. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Osaka | Washington | Working hours |
|---|---|---|
| 12:00 AM | 11:00 AM prev day | Washington only |
| 1:00 AM | 12:00 PM prev day | Washington only |
| 2:00 AM | 1:00 PM prev day | Washington only |
| 3:00 AM | 2:00 PM prev day | Washington only |
| 4:00 AM | 3:00 PM prev day | Washington only |
| 5:00 AM | 4:00 PM prev day | Washington only |
| 6:00 AM | 5:00 PM prev day | — |
| 7:00 AM | 6:00 PM prev day | — |
| 8:00 AM | 7:00 PM prev day | — |
| 9:00 AM | 8:00 PM prev day | Osaka only |
| 10:00 AM | 9:00 PM prev day | Osaka only |
| 11:00 AM | 10:00 PM prev day | Osaka only |
| 12:00 PM | 11:00 PM prev day | Osaka only |
| 1:00 PM | 12:00 AM | Osaka only |
| 2:00 PM | 1:00 AM | Osaka only |
| 3:00 PM | 2:00 AM | Osaka only |
| 4:00 PM | 3:00 AM | Osaka only |
| 5:00 PM | 4:00 AM | — |
| 6:00 PM | 5:00 AM | — |
| 7:00 PM | 6:00 AM | — |
| 8:00 PM | 7:00 AM | — |
| 9:00 PM | 8:00 AM | — |
| 10:00 PM | 9:00 AM | Washington only |
| 11:00 PM | 10:00 AM | Washington only |
Understanding the Osaka – Washington Time Difference
Osaka runs on Asia/Tokyo, currently JST (UTC+9:00). Washington runs on America/New_York, currently EDT (UTC-4:00). The gap of 13 hours is simply the distance between those two offsets.
Washington observes Daylight Saving Time and Osaka does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when Washington adjusts its clocks and the difference becomes 14 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Japan · Daylight Saving Time in the United States.
Osaka today
Washington today
Frequently Asked Questions
What is the time difference between Osaka and Washington?
Washington is currently 13 hours behind Osaka. That gap becomes 14 hours on Sunday, November 1, 2026, when Washington changes its clocks.
How many hours behind is Washington from Osaka?
Washington is 13 hours behind Osaka. Looking at it the other way, Osaka is 13 hours ahead of Washington.
What time is it in Washington when it is 9:00 AM in Osaka?
When it is 9:00 AM in Osaka, it is 8:00 PM the previous day in Washington.
Is Washington ahead of or behind Osaka?
Washington is 13 hours behind Osaka. Osaka reaches each point in the day first, so Washington is still getting started while the Osaka working day is finishing.
What is the best time to call between Osaka and Washington?
Standard business hours in Osaka and Washington do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 7:00 AM to 11:00 AM in Osaka, which is 6:00 PM to 10:00 PM in Washington.
Does the time difference between Osaka and Washington change during the year?
Yes. Washington observes Daylight Saving Time and Osaka does not, so the gap between them shifts during the year. It changes to 14 hours on Sunday, November 1, 2026.
What time zones are Osaka and Washington in?
Osaka uses the Asia/Tokyo time zone, currently JST (UTC+9:00). Washington uses America/New_York, currently EDT (UTC-4:00).