Sunrise and Sunset times in Na Son, Laos 
Na Son
Viangchan
Time zone: Asia/Vientiane, UTC 7 h.
Latitude: 18.0333, Longitude: 102.567
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 05:37:48 | 12:13:37 | 18:49:26 | 13h 11m 38s |
| 2025-Jul-02, Wednesday | 05:38:07 | 12:13:49 | 18:49:31 | 13h 11m 24s |
| 2025-Jul-03, Thursday | 05:38:25 | 12:14:00 | 18:49:34 | 13h 11m 9s |
| 2025-Jul-04, Friday | 05:38:44 | 12:14:11 | 18:49:37 | 13h 10m 53s |
| 2025-Jul-05, Saturday | 05:39:04 | 12:14:21 | 18:49:39 | 13h 10m 35s |
| 2025-Jul-06, Sunday | 05:39:23 | 12:14:31 | 18:49:40 | 13h 10m 17s |
| 2025-Jul-07, Monday | 05:39:43 | 12:14:41 | 18:49:39 | 13h 9m 56s |
| 2025-Jul-08, Tuesday | 05:40:03 | 12:14:51 | 18:49:38 | 13h 9m 35s |
| 2025-Jul-09, Wednesday | 05:40:23 | 12:15:00 | 18:49:36 | 13h 9m 13s |
| 2025-Jul-10, Thursday | 05:40:43 | 12:15:08 | 18:49:33 | 13h 8m 50s |
| 2025-Jul-11, Friday | 05:41:04 | 12:15:16 | 18:49:29 | 13h 8m 25s |
| 2025-Jul-12, Saturday | 05:41:24 | 12:15:24 | 18:49:24 | 13h 8m 0s |
| 2025-Jul-13, Sunday | 05:41:45 | 12:15:31 | 18:49:17 | 13h 7m 32s |
| 2025-Jul-14, Monday | 05:42:06 | 12:15:38 | 18:49:10 | 13h 7m 4s |
| 2025-Jul-15, Tuesday | 05:42:26 | 12:15:44 | 18:49:02 | 13h 6m 36s |
| 2025-Jul-16, Wednesday | 05:42:47 | 12:15:50 | 18:48:53 | 13h 6m 6s |
| 2025-Jul-17, Thursday | 05:43:08 | 12:15:55 | 18:48:42 | 13h 5m 34s |
| 2025-Jul-18, Friday | 05:43:29 | 12:16:00 | 18:48:31 | 13h 5m 2s |
| 2025-Jul-19, Saturday | 05:43:50 | 12:16:04 | 18:48:19 | 13h 4m 29s |
| 2025-Jul-20, Sunday | 05:44:10 | 12:16:08 | 18:48:05 | 13h 3m 55s |
| 2025-Jul-21, Monday | 05:44:31 | 12:16:11 | 18:47:51 | 13h 3m 20s |
| 2025-Jul-22, Tuesday | 05:44:51 | 12:16:13 | 18:47:35 | 13h 2m 44s |
| 2025-Jul-23, Wednesday | 05:45:12 | 12:16:15 | 18:47:18 | 13h 2m 6s |
| 2025-Jul-24, Thursday | 05:45:32 | 12:16:16 | 18:47:01 | 13h 1m 29s |
| 2025-Jul-25, Friday | 05:45:52 | 12:16:17 | 18:46:42 | 13h 0m 50s |
| 2025-Jul-26, Saturday | 05:46:12 | 12:16:17 | 18:46:23 | 13h 0m 11s |
| 2025-Jul-27, Sunday | 05:46:31 | 12:16:17 | 18:46:02 | 12h 59m 31s |
| 2025-Jul-28, Monday | 05:46:51 | 12:16:16 | 18:45:40 | 12h 58m 49s |
| 2025-Jul-29, Tuesday | 05:47:10 | 12:16:14 | 18:45:18 | 12h 58m 8s |
| 2025-Jul-30, Wednesday | 05:47:29 | 12:16:12 | 18:44:54 | 12h 57m 25s |
| 2025-Jul-31, Thursday | 05:47:48 | 12:16:09 | 18:44:29 | 12h 56m 41s |
Na Son on Laos map:
Cities in the same time zone Asia/Vientiane
Vientiane (Viangchan), 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 Nahoy (Viangchan), Ban Sithan Nua (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 Houakeng (Champasak), Ban Souanmon (Viangchan), Ban Sikhai (Viangchan), Ban Toumaxa (Champasak), Ban Na Lao Thong (Nong Khai), Ban Phon Kheng (Viangchan), Ban Kabao (Champasak), Ban Vattai Gnai (Viangchan)
Largest Populated Areas in Laos
Vientiane (Viangchan), 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 Don (Viangchan), Ban Na Hoi (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), Ban Kabao (Champasak), Nahe (Viangchan), Ban Nongdouang (Viangchan), Ban Sithan Nua (Viangchan), Ban Kaoliao (Viangchan), Ban Nongpanai (Viangchan), Ban Nong Veng (Viangchan), Ban Thamouang (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