Sunrise and Sunset times in Vientiane, Laos 
Vientiane
Viangchan
Time zone: Asia/Vientiane, UTC 7 h.
Latitude: 17.9667, Longitude: 102.6
754 000 people
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jun-01, Sunday | 05:33:19 | 12:07:27 | 18:41:34 | 13h 8m 15s |
| 2025-Jun-02, Monday | 05:33:17 | 12:07:36 | 18:41:56 | 13h 8m 39s |
| 2025-Jun-03, Tuesday | 05:33:15 | 12:07:46 | 18:42:18 | 13h 9m 3s |
| 2025-Jun-04, Wednesday | 05:33:14 | 12:07:56 | 18:42:39 | 13h 9m 25s |
| 2025-Jun-05, Thursday | 05:33:14 | 12:08:07 | 18:43:00 | 13h 9m 46s |
| 2025-Jun-06, Friday | 05:33:15 | 12:08:18 | 18:43:20 | 13h 10m 5s |
| 2025-Jun-07, Saturday | 05:33:17 | 12:08:29 | 18:43:41 | 13h 10m 24s |
| 2025-Jun-08, Sunday | 05:33:20 | 12:08:40 | 18:44:01 | 13h 10m 41s |
| 2025-Jun-09, Monday | 05:33:23 | 12:08:52 | 18:44:21 | 13h 10m 58s |
| 2025-Jun-10, Tuesday | 05:33:28 | 12:09:04 | 18:44:40 | 13h 11m 12s |
| 2025-Jun-11, Wednesday | 05:33:33 | 12:09:16 | 18:44:59 | 13h 11m 26s |
| 2025-Jun-12, Thursday | 05:33:40 | 12:09:28 | 18:45:17 | 13h 11m 37s |
| 2025-Jun-13, Friday | 05:33:47 | 12:09:41 | 18:45:35 | 13h 11m 48s |
| 2025-Jun-14, Saturday | 05:33:55 | 12:09:54 | 18:45:53 | 13h 11m 58s |
| 2025-Jun-15, Sunday | 05:34:03 | 12:10:06 | 18:46:10 | 13h 12m 7s |
| 2025-Jun-16, Monday | 05:34:13 | 12:10:19 | 18:46:26 | 13h 12m 13s |
| 2025-Jun-17, Tuesday | 05:34:23 | 12:10:32 | 18:46:42 | 13h 12m 19s |
| 2025-Jun-18, Wednesday | 05:34:33 | 12:10:45 | 18:46:57 | 13h 12m 24s |
| 2025-Jun-19, Thursday | 05:34:45 | 12:10:58 | 18:47:12 | 13h 12m 27s |
| 2025-Jun-20, Friday | 05:34:57 | 12:11:11 | 18:47:26 | 13h 12m 29s |
| 2025-Jun-21, Saturday | 05:35:10 | 12:11:25 | 18:47:39 | 13h 12m 29s |
| 2025-Jun-22, Sunday | 05:35:23 | 12:11:38 | 18:47:52 | 13h 12m 29s |
| 2025-Jun-23, Monday | 05:35:37 | 12:11:51 | 18:48:04 | 13h 12m 27s |
| 2025-Jun-24, Tuesday | 05:35:52 | 12:12:03 | 18:48:15 | 13h 12m 23s |
| 2025-Jun-25, Wednesday | 05:36:07 | 12:12:16 | 18:48:25 | 13h 12m 18s |
| 2025-Jun-26, Thursday | 05:36:23 | 12:12:29 | 18:48:35 | 13h 12m 12s |
| 2025-Jun-27, Friday | 05:36:39 | 12:12:41 | 18:48:44 | 13h 12m 5s |
| 2025-Jun-28, Saturday | 05:36:56 | 12:12:54 | 18:48:52 | 13h 11m 56s |
| 2025-Jun-29, Sunday | 05:37:13 | 12:13:06 | 18:48:59 | 13h 11m 46s |
| 2025-Jun-30, Monday | 05:37:30 | 12:13:18 | 18:49:05 | 13h 11m 35s |
Vientiane on Laos map:
Cities in the same time zone Asia/Vientiane
Louangphabang (Louangphabang), Pakxe (Champasak), Savannakhet (Savannakhét), Thakhek (Khammouan), Xam Nua (Houaphan), Xaignabouli (Xaignabouli), Champasak (Champasak), Ban Houayxay (Bokèo), Phongsali (Phôngsali), Salavan (Salavan), Attapu (Attapu), Louang Namtha (Louangnamtha), Ban Thin Then (Viangchan), Ban Bolek (Viangchan), Ban Bo Na Ngoua (Viangchan), Ban Pha Khao (Viangchan), Ban Nongthak (Viangchan), Ban Nong Pha Nhac (Viangchan), Ban Na-Oy Nou (Viangchan), Ban Nakay (Viangchan), Ban Nahoy (Viangchan), Na Son (Viangchan), Ban Sithan Nua (Viangchan), Ban Sikhai (Viangchan), Ban Vattai Gnai (Viangchan), Ban Houakeng (Champasak), Ban Nakok (Champasak), Ban Kabao (Champasak), Ban Souanmon (Viangchan), Ban Na Lao Thong (Nong Khai)
Largest Populated Areas in Laos
Louangphabang (Louangphabang), Pakxe (Champasak), Savannakhet (Savannakhét), Thakhek (Khammouan), Xam Nua (Houaphan), Xaignabouli (Xaignabouli), Champasak (Champasak), Ban Houayxay (Bokèo), Phongsali (Phôngsali), Salavan (Salavan), Attapu (Attapu), Louang Namtha (Louangnamtha), Ban Kaoliao (Viangchan), Ban Pha Khao (Viangchan), Ban Nongthak (Viangchan), Ban Nong Pha Nhac (Viangchan), Ban Na-Oy Nou (Viangchan), Ban Nakay (Viangchan), Ban Nahoy (Viangchan), Ban Chom Cheng (Viangchan), Nahe (Viangchan), Ban Phon Kheng (Viangchan), Ban Thamouang (Viangchan), Ban Don (Viangchan), Ban Nong Veng (Viangchan), Ban Kabao (Champasak), Ban Souanmon (Viangchan), Ban Nongpanai (Viangchan), Ban Nongdouang (Viangchan), Ban Na Hoi (Viangchan)
Daylight Hours FAQ: 10 Most Googled Questions Answered
1. What are daylight hours?
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
2. Why are days shorter in winter and longer in summer?
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
3. When is the longest day of the year?
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
4. When is the shortest day of the year?
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
5. How does latitude affect daylight hours?
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
6. Why do New York and Miami have different day lengths?
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
7. When are day and night equal?
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
How fast do days lengthen/shorten?
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
9. Where can I check daylight hours for my city?
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
10. Does daylight affect health?
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks