July 21, 2026 · Udon Thani, Thailand
Udon Thani has 13h 2m of daylight today. Sunrise is at 05:45 and sunset is at 18:47. All times are calculated astronomically for Udon Thani's exact coordinates.
Udon Thani lies at 17°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Day length changes fastest near the spring and autumn equinoxes and slowest near the longest day and shortest day of the year. See the year chart to visualise how daylight hours shift month by month for Udon Thani, or see daylight hours for every day of the year.
The longest day in Udon Thani is around 13h 10m (around June 21). The shortest is around 11h 5m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Day length | Sunrise | Sunset |
|---|---|---|---|
| January | 11h 12m | 06:43 | 17:54 |
| February | 11h 34m | 06:37 | 18:11 |
| March | 12h 1m | 06:18 | 18:19 |
| April | 12h 31m | 05:54 | 18:25 |
| May | 12h 56m | 05:38 | 18:34 |
| June | 13h 10m | 05:35 | 18:45 |
| July | 13h 5m | 05:43 | 18:48 |
| August | 12h 44m | 05:53 | 18:36 |
| September | 12h 15m | 05:58 | 18:13 |
| October | 11h 46m | 06:02 | 17:48 |
| November | 11h 20m | 06:14 | 17:34 |
| December | 11h 6m | 06:32 | 17:37 |