| Sunrise | Sunset | Daylight | |
|---|---|---|---|
| Today | 05:59 | 18:10 | 12h 11m |
| Tomorrow | 05:59 | 18:09 | 12h 10m |
| Change | — | −1m | −1m |
Positive change in sunset / daylight = days are getting longer. Negative change in sunrise = sun is rising earlier.
Today's light segments for Vientiane. Amber = daylight, violet = twilight, dark = night.
Sunrise and sunset on the 1st of each month in Vientiane.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 06:41 | 17:46 | 11h 05m |
| February | 06:43 | 18:04 | 11h 21m |
| March | 06:30 | 18:16 | 11h 46m |
| April | 06:05 | 18:23 | 12h 18m |
| May | 05:44 | 18:31 | 12h 47m |
| June | 05:34 | 18:42 | 13h 08m |
| July | 05:38 | 18:50 | 13h 12m |
| August | 05:49 | 18:45 | 12h 56m |
| September | 05:56 | 18:25 | 12h 29m |
| October | 06:01 | 18:00 | 11h 59m |
| November | 06:09 | 17:39 | 11h 30m |
| December | 06:25 | 17:34 | 11h 09m |
Vientiane is located at 17.97°N, 102.60°E. Its latitude determines how dramatically daylight hours change through the year.
The city uses the Asia/Vientiane timezone (GMT+7). It does not observe Daylight Saving Time, so solar times shift gradually through the year without abrupt clock changes.
Solar noon — the moment the sun reaches its highest point in the sky — occurs when the sun crosses the local meridian. In Vientiane this falls around 12:08 in mid-summer and 11:59 in December, reflecting UTC offset and any DST adjustments.