Time in Hanoi
Vietnam · Asia/Ho Chi Minh · latitude 21.03°
Reading your clock…
Hanoi never changes its clocks
Hanoi stays on UTC+07:00 all year round. This is worth being careful about rather than relaxed about: the gap between Hanoi and a city that does observe daylight saving still moves twice a year, because the other end moved. A recurring call can drift by an hour without anything changing here at all.
Same clock, different sky: Ho Chi Minh City, Da Nang share Asia/Ho_Chi_Minh. Sunrise and sunset differ between them because latitude does, even though the clock does not.
Time difference from Hanoi
Where a range is shown, the gap genuinely changes during the year. That is not rounding or hedging — it is two governments moving their clocks on different weekends.
| City | Difference now | Across the year |
|---|---|---|
| London | 6 hours behind | −7h / −6h |
| New York | 11 hours behind | −12h / −11h |
| Los Angeles | 14 hours behind | −15h / −14h |
| Chicago | 12 hours behind | −13h / −12h |
| Toronto | 11 hours behind | −12h / −11h |
| Paris | 5 hours behind | −6h / −5h |
| Berlin | 5 hours behind | −6h / −5h |
| Dubai | 3 hours behind | constant |
| Mumbai | 1 hour 30 minutes behind | constant |
| Singapore | 1 hour ahead | constant |
| Hong Kong | 1 hour ahead | constant |
| Tokyo | 2 hours ahead | constant |
| Sydney | 3 hours ahead | +3h / +4h |
| Auckland | 5 hours ahead | +5h / +6h |
| São Paulo | 10 hours behind | constant |
| UTC | 7 hours behind | constant |
Daylight in Hanoi through the year
From about 10.8 hours in December to 13.4 hours in June. This is the part a plain clock leaves out: 17:00 is a bright evening in one month and long dark in another.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 06:40 | 17:43 | 11h 3m |
| February | 06:28 | 18:01 | 11h 33m |
| March | 06:05 | 18:12 | 12h 7m |
| April | 05:38 | 18:21 | 12h 43m |
| May | 05:21 | 18:33 | 13h 12m |
| June | 05:19 | 18:44 | 13h 25m |
| July | 05:30 | 18:44 | 13h 14m |
| August | 05:41 | 18:27 | 12h 46m |
| September | 05:48 | 17:59 | 12h 11m |
| October | 05:57 | 17:32 | 11h 35m |
| November | 06:14 | 17:19 | 11h 5m |
| December | 06:33 | 17:24 | 10h 51m |
Daylight length is accurate. The clock times of sunrise and sunset assume each city sits at the centre of its time zone, which can put them up to about an hour and a quarter out for places near a zone's edge — Madrid being the standard example. Day length is unaffected.
Questions
About time in Hanoi
What time zone is Hanoi in?
Hanoi uses the IANA time zone Asia/Ho_Chi_Minh, a fixed UTC+07:00 with no daylight saving. The same zone covers Ho Chi Minh City, Da Nang.
Does Hanoi observe daylight saving time?
No. Hanoi stays on UTC+07:00 all year. That does not mean the gap between Hanoi and other cities is fixed, though: when a city that does observe daylight saving changes its clocks, the difference between you and them moves even though nothing changed here.
Why does the time difference to Hanoi keep changing?
Because the two places do not change their clocks on the same weekend, and in opposite hemispheres they change in opposite directions. London is a clear example: it sits 7 hours behind, then 6 hours behind across the year rather than one fixed distance.
How much daylight does Hanoi get?
Around 13.4 hours at the longest, in June, and about 10.8 hours at the shortest, in December. The table on this page lists sunrise and sunset through the year. Times are calculated from Hanoi's latitude of 21.03° and are approximate to within about an hour for cities that sit well away from the centre of their time zone.