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Time difference between Houston and Hanoi

Hanoi is 12 hours ahead of Houston.

Houston
United States · Central Daylight Time
2:44 AM
Wednesday, October 21, 2026
Hanoi
Vietnam · Indochina Time
2:44 PM
Wednesday, October 21, 2026
Compare more placesHanoi to Houston

Houston to Hanoi time converter

Green rows are office hours in both places; light green rows are when both are awake.

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

Questions

What is the time difference between Houston and Hanoi?

Hanoi is 12 hours ahead of Houston. Houston is on UTC−5 and Hanoi is on UTC+7.

What time is it in Hanoi when it is 9 AM in Houston?

When it is 9:00 AM in Houston, it is 9:00 PM in Hanoi.

When is the best time to call Hanoi from Houston?

There are no shared office hours. The most comfortable time to call is 8:00 AM–10:00 AM in Houston (8:00 PM–10:00 PM in Hanoi); 8:00 PM–10:00 PM in Houston (8:00 AM–10:00 AM in Hanoi), when both places are awake.

Does the time difference between Houston and Hanoi change?

Yes. Because of daylight saving time, the difference changes on Sunday, November 1, 2026, when Hanoi will be 13 hours ahead of Houston.

Houston is 12 hours behind Hanoi. More: time in Houston · time in Hanoi

Time difference from Houston to other cities

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Time difference from Hanoi