Hanoi
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
Vietnam Β· Asia/Ho_Chi_Minh Β· GMT+7
Hanoi and Hong Kong Time Difference
Hanoi is 1h behind Hong Kong
Hong Kong
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
Hong Kong SAR China Β· Asia/Hong_Kong Β· GMT+8
Best time for work calls
If you are scheduling a call between Hanoi and Hong Kong, the overlap window is limited to typical business hours. When it is 9 am in Hanoi it is 10 am in Hong Kong β a workable window for scheduling. The latest reasonable overlap is around 4 pm in Hanoi (5 pm in Hong Kong). Outside this window there is effectively no good overlap for regular office hours.
Best time for family calls
Hanoi and Hong Kong have a comfortable window for a family call β no awkward alarms required. Hanoi is 1 hour behind Hong Kong, which gives you 2 hours of genuine overlap when both sides are free. Aim for between 6 pm and 8 pm in Hanoi β that lands at 7 pm to 9 pm in Hong Kong, after the school run and before anyone's ready for bed. For a Sunday catch-up or a midweek check-in, this is the sweet spot.
Hanoi
National Day
Sep 2in 105dNew Year's Day
Jan 1in 226dReunification Day
Apr 30in 345d
Daylight Cycle
π
Dawn4:53:45 AM
βοΈ Sunrise5:17:50 AM
π Solar Noon11:54:39 AM
π Golden Hour6:00:11 PM
π Sunset6:31:28 PM
π Dusk6:55:33 PM
Day length13:13:38
Data via sunrisesunset.io
Current Weather
Conditionπ¦οΈ Drizzle
Temperature28Β°C
Feels like35Β°C
Humidity91%
Wind4 mph SE
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:26
Moonset23:13
Hong Kong
Buddha's Birthday
May 25in 5dDragon Boat Festival
Jun 19in 30dHong Kong Special Administrative Region Establishment Day
Jul 1in 42d
Daylight Cycle
π
Dawn5:17:50 AM
βοΈ Sunrise5:42:11 AM
π Solar Noon12:21:19 PM
π Golden Hour6:28:50 PM
π Sunset7:00:26 PM
π Dusk7:24:47 PM
Day length13:18:15
Data via sunrisesunset.io
Current Weather
Conditionπ¦οΈ Rain showers
Temperature25Β°C
Feels like32Β°C
Humidity99%
Wind2 mph SE
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:48
Moonset23:41