Tokyo to Ansan Time Difference
Tokyo and Ansan are in the same time zone — no time difference.
Tokyo (UTC+9) → Seoul (UTC+9)
🕐 Interactive Time Explorer
When it's 11:00 in Tokyo, it's 11:00 in Ansan
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Tokyo & Ansan✓ Perfect Match (8 hours)
✈️ Travel Information
Distance
1,163 km
Est. Flight Time
~2.4h
Time Difference
0h
Work Hours Overlap
8h
Excellent
🔴 Office Closed
Tomorrow 09:00
09:00 - 17:00
⏰ Quick Conversion
06:00
Tokyo
06:00
Ansan
09:00
Tokyo
09:00
Ansan
12:00
Tokyo
12:00
Ansan
15:00
Tokyo
15:00
Ansan
18:00
Tokyo
18:00
Ansan
21:00
Tokyo
21:00
Ansan
00:00
Tokyo
00:00
Ansan
03:00
Tokyo
03:00
Ansan
Frequently Asked Questions
Is there a time difference between Tokyo and Ansan?
Tokyo and Ansan share the same UTC offset — there is no time difference between them. Tokyo operates on Asia/Tokyo (UTC+9), while Ansan uses Asia/Seoul (UTC+9).
What is the best time to call Ansan from Tokyo?
There are 8 hours of overlapping business time (9 AM–5 PM) between Tokyo and Ansan. The best window is 09:00–17:00 Tokyo time (09:00–17:00 in Ansan).
Does the Tokyo to Ansan time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Tokyo and Ansan
The distance between Tokyo and Ansan is approximately 1,163 km. A direct flight typically takes around 2.4 hours. Your arrival clock will show local Ansan time — use our Flight Time Calculator to predict exact arrival times.