July 21, 2026 · Tuen Mun, Hong Kong
Sunset in Tuen Mun today is at 19:11. Day length is 13h 19m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Tuen Mun's coordinates and updated daily.
Tuen Mun lies at 22°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Tuen Mun.
The longest day in Tuen Mun is around 13h 30m (around June 21). The shortest is around 10h 46m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 18:01 | 07:07 | 10h 54m |
| February | 18:21 | 06:57 | 11h 24m |
| March | 18:34 | 06:34 | 11h 60m |
| April | 18:45 | 06:05 | 12h 39m |
| May | 18:57 | 05:45 | 13h 12m |
| June | 19:10 | 05:40 | 13h 30m |
| July | 19:12 | 05:49 | 13h 23m |
| August | 18:57 | 06:02 | 12h 55m |
| September | 18:29 | 06:12 | 12h 18m |
| October | 18:00 | 06:21 | 11h 40m |
| November | 17:42 | 06:37 | 11h 5m |
| December | 17:43 | 06:57 | 10h 46m |