Hạ Long
Sunrise and sunset in Hạ Long
Today’s sunrise, sunset and twilight in Hạ Long, in local time. At 21° N, the day lasts from 10 h 52 min at the winter solstice to 13 h 24 min at the summer solstice.
Today · worked out at
Thursday, October 22: sunrise at 05:49, sunset at 17:22.
Day length 11 h 33 min, 1 min 7 s shorter than yesterday.
Solar noon at 11:36, with the Sun 58° above the horizon.
Times are Hạ Long time (GMT+7).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 04:35 | 18:36 |
| Nautical twilight | 05:01 | 18:10 |
| Civil twilight | 05:27 | 17:45 |
| Sunrise and sunset | 05:49 | 17:22 |
| Golden hour | 05:49–06:19 | 16:52–17:22 |
Each twilight begins at the morning time and ends at the evening one.
The year in Hạ Long
- Longest day: June 21, 13 h 24 min, from sunrise at 05:11 to sunset at 18:35.
- Shortest day: December 22, 10 h 52 min, from sunrise at 06:24 to sunset at 17:15.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 06:30 | 17:35 | 11 h 04 min |
| February 21 | 06:18 | 17:52 | 11 h 34 min |
| March 21 | 05:55 | 18:02 | 12 h 08 min |
| April 21 | 05:28 | 18:12 | 12 h 44 min |
| May 21 | 05:12 | 18:24 | 13 h 12 min |
| June 21 | 05:11 | 18:35 | 13 h 24 min |
| July 21 | 05:21 | 18:34 | 13 h 13 min |
| August 21 | 05:32 | 18:17 | 12 h 45 min |
| September 21 | 05:40 | 17:49 | 12 h 09 min |
| October 21 | 05:49 | 17:23 | 11 h 34 min |
| November 21 | 06:05 | 17:09 | 11 h 04 min |
| December 21 | 06:23 | 17:15 | 10 h 52 min |
Good to know
- Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
- Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
- Worked out when the page loads from NOAA’s solar equations, for 21° N, 107.1° E, and accurate to about a minute.
How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets
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