Time difference between Hong Kong and Hanoi

Hanoi is 1 hour behind Hong Kong.

Hong Kong · Hong Kong Standard Time

3:46 PM

Wednesday, October 21, 2026

Vietnam · Indochina Time

2:46 PM

Wednesday, October 21, 2026

Hong Kong to Hanoi time converter

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

What is the time difference between Hong Kong and Hanoi?

Hanoi is 1 hour behind Hong Kong. Hong Kong is on UTC+8 and Hanoi is on UTC+7.

What time is it in Hanoi when it is 9 AM in Hong Kong?

When it is 9:00 AM in Hong Kong, it is 8:00 AM in Hanoi.

When is the best time to call Hanoi from Hong Kong?

The best time to call or meet is 10:00 AM–6:00 PM in Hong Kong (9:00 AM–5:00 PM in Hanoi), when both places are in normal office hours.

Does the time difference between Hong Kong and Hanoi change?

No. Neither Hong Kong nor Hanoi changes its clocks in a way that affects the difference, so it stays the same all year.

Hong Kong is 1 hour ahead of Hanoi. More: time in Hong Kong · time in Hanoi