Ansan to Tokyo Time Difference
Ansan and Tokyo are in the same time zone — no time difference.
Seoul (UTC+9) → Tokyo (UTC+9)
🕐 Interactive Time Explorer
When it's 17:00 in Ansan, it's 17:00 in Tokyo
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Ansan & Tokyo✓ 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
Today 09:00
09:00 - 17:00
⏰ Quick Conversion
06:00
Ansan
06:00
Tokyo
09:00
Ansan
09:00
Tokyo
12:00
Ansan
12:00
Tokyo
15:00
Ansan
15:00
Tokyo
18:00
Ansan
18:00
Tokyo
21:00
Ansan
21:00
Tokyo
00:00
Ansan
00:00
Tokyo
03:00
Ansan
03:00
Tokyo
Frequently Asked Questions
Is there a time difference between Ansan and Tokyo?
Ansan and Tokyo share the same UTC offset — there is no time difference between them. Ansan operates on Asia/Seoul (UTC+9), while Tokyo uses Asia/Tokyo (UTC+9).
What is the best time to call Tokyo from Ansan?
There are 8 hours of overlapping business time (9 AM–5 PM) between Ansan and Tokyo. The best window is 09:00–17:00 Ansan time (09:00–17:00 in Tokyo).
Does the Ansan to Tokyo 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 Ansan and Tokyo
The distance between Ansan and Tokyo is approximately 1,163 km. A direct flight typically takes around 2.4 hours. Your arrival clock will show local Tokyo time — use our Flight Time Calculator to predict exact arrival times.