Time Difference: Istanbul vs Hanoi

Live comparison of current time in Istanbul, Turkey and Hanoi, Vietnam.

Istanbul, Turkey
10:05:00AM
Friday, March 27, 2026
4 hours ahead
Hanoi, Vietnam
02:05:00PM
Friday, March 27, 2026

Hour-by-Hour Comparison

IstanbulHanoi
12:00 AM4:00 AM
1:00 AM5:00 AM
2:00 AM6:00 AM
3:00 AM7:00 AM
4:00 AM8:00 AM
5:00 AM9:00 AM
6:00 AM10:00 AM
7:00 AM11:00 AM
8:00 AM12:00 PM
9:00 AM1:00 PM
10:00 AM2:00 PM
11:00 AM3:00 PM
12:00 PM4:00 PM
1:00 PM5:00 PM
2:00 PM6:00 PM
3:00 PM7:00 PM
4:00 PM8:00 PM
5:00 PM9:00 PM
6:00 PM10:00 PM
7:00 PM11:00 PM
8:00 PM12:00 AM
9:00 PM1:00 AM
10:00 PM2:00 AM
11:00 PM3:00 AM

About Time Difference: Istanbul and Hanoi

Istanbul, Turkey is in the Europe/Istanbul timezone with a UTC offset of UTC+3. Hanoi, Vietnam is in the Asia/Bangkok timezone with a UTC offset of UTC+7. The hour-by-hour table above shows when working hours overlap, helping you find the best time for calls, meetings, and collaboration.

Frequently Asked Questions

What is the time difference between Istanbul and Hanoi?

Istanbul uses the Europe/Istanbul timezone (UTC+3) and Hanoi uses the Asia/Bangkok timezone (UTC+7). The exact difference may vary during daylight saving transitions.

When is the best time to call from Istanbul to Hanoi?

Look for hours highlighted in green in the comparison table above — these are times when both cities are within standard working hours (9 AM - 5 PM).

Does the time difference change?

Yes, if either city observes daylight saving time, the difference can shift by 1 hour during DST transitions. This page always shows the current, live difference.