Time difference between Hanoi and Houston
Compare the current local time in Hanoi and Houston, see when your working hours overlap, and convert any specific hour between the two timezones.
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Convert a specific time
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Working-hours overlap
When Hanoi's 9:00–17:00 business hours overlap with Houston's.
Hanoi working hours
Houston working hours
Overlap (both working)
🇻🇳 Hanoi
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🇺🇸 Houston
Scheduling across Hanoi and Houston
Scheduling between Hanoi and Houston is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 4 hours between Houston closing at 17:00 local and Hanoi opening at 09:00 local. Practical bridging slots: an early Hanoi start at 05:00 (catching Houston just at close, 17:00), or a late Houston call at 21:00 (catching Hanoi at opening, 09:00).
Quick reference
| 🇻🇳 Hanoi | 🇺🇸 Houston | In Houston it's… |
|---|---|---|
| 06:00 — Early morning | — | — |
| 09:00 — Start of work | — | — |
| 12:00 — Lunchtime | — | — |
| 15:00 — Mid-afternoon | — | — |
| 17:00 — End of work | — | — |
| 20:00 — Evening | — | — |
Daylight saving status
🇻🇳 Hanoi
Hanoi does not observe daylight saving time. The local offset is fixed year-round.
🇺🇸 Houston
Currently in CDT (daylight saving)
Clocks go back to CST
on Sunday 1 November 2026