Sunrise and Sunset times in Lang Son, Vietnam

Lang Son Vietnam Daily sun schedule, day length and annual chart
☀️ Local time
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Sunrise
Today sunrise
05:27:53
Sunset
Today sunset
18:15:11
🌤️
Day length
12h 47m 18s
City
Lang Son
Region / Country
Lạng Sơn, Vietnam
Time zone
Asia/Ho_Chi_Minh, UTC +7 h.
Population
148 000 people
Latitude
21.846
Longitude
106.757

Select month and year

Date Sunrise Solar Noon Sunset Day length
2026-Apr-01, Wednesday 05:45:56 11:56:55 18:07:53 12h 21m 57s
2026-Apr-02, Thursday 05:45:01 11:56:37 18:08:13 12h 23m 12s
2026-Apr-03, Friday 05:44:06 11:56:19 18:08:33 12h 24m 27s
2026-Apr-04, Saturday 05:43:11 11:56:02 18:08:53 12h 25m 42s
2026-Apr-05, Sunday 05:42:16 11:55:44 18:09:12 12h 26m 56s
2026-Apr-06, Monday 05:41:22 11:55:27 18:09:32 12h 28m 10s
2026-Apr-07, Tuesday 05:40:28 11:55:10 18:09:52 12h 29m 24s
2026-Apr-08, Wednesday 05:39:35 11:54:54 18:10:13 12h 30m 38s
2026-Apr-09, Thursday 05:38:41 11:54:37 18:10:33 12h 31m 52s
2026-Apr-10, Friday 05:37:48 11:54:21 18:10:53 12h 33m 5s
2026-Apr-11, Saturday 05:36:56 11:54:05 18:11:14 12h 34m 18s
2026-Apr-12, Sunday 05:36:04 11:53:49 18:11:35 12h 35m 31s
2026-Apr-13, Monday 05:35:13 11:53:34 18:11:55 12h 36m 42s
2026-Apr-14, Tuesday 05:34:21 11:53:19 18:12:16 12h 37m 55s
2026-Apr-15, Wednesday 05:33:31 11:53:04 18:12:38 12h 39m 7s
2026-Apr-16, Thursday 05:32:41 11:52:50 18:12:59 12h 40m 18s
2026-Apr-17, Friday 05:31:51 11:52:36 18:13:20 12h 41m 29s
2026-Apr-18, Saturday 05:31:03 11:52:22 18:13:42 12h 42m 39s
2026-Apr-19, Sunday 05:30:14 11:52:09 18:14:04 12h 43m 50s
2026-Apr-20, Monday 05:29:27 11:51:56 18:14:26 12h 44m 59s
2026-Apr-21, Tuesday 05:28:40 11:51:44 18:14:48 12h 46m 8s
2026-Apr-22, Wednesday 05:27:53 11:51:32 18:15:11 12h 47m 18s
2026-Apr-23, Thursday 05:27:08 11:51:21 18:15:34 12h 48m 26s
2026-Apr-24, Friday 05:26:23 11:51:10 18:15:57 12h 49m 34s
2026-Apr-25, Saturday 05:25:38 11:50:59 18:16:20 12h 50m 42s
2026-Apr-26, Sunday 05:24:55 11:50:49 18:16:43 12h 51m 48s
2026-Apr-27, Monday 05:24:12 11:50:39 18:17:07 12h 52m 55s
2026-Apr-28, Tuesday 05:23:30 11:50:30 18:17:30 12h 54m 0s
2026-Apr-29, Wednesday 05:22:49 11:50:22 18:17:54 12h 55m 5s
2026-Apr-30, Thursday 05:22:09 11:50:14 18:18:19 12h 56m 10s

Day length in Lang Son during the year on the chart

Lang Son on Vietnam map

Countries closest to Vietnam

*Calculation of distances from capital to capital

Daylight Hours FAQ: 10 Most Googled Questions Answered

Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.

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).

Northern Hemisphere: June 20-22 (summer solstice).

Southern Hemisphere: December 21-23.

Near polar circles, the sun doesn't set for 24 hours.

Northern Hemisphere: December 21-22 (winter solstice).

Southern Hemisphere: June 20-21.

The closer to poles, the more extreme variations:

  • Equator: ~12-hour days year-round
  • Polar regions: Midnight sun/polar nights occur

Miami's lower latitude means:

  • Winter days are longer than NY's
  • Summer days are slightly shorter

During equinoxes:

  • Spring: March 20-21
  • Fall: September 22-23

Most rapid change near equinoxes: 2-4 minutes daily.

Slowest change near solstices: <1 minute daily.

Reliable tools:

  • Timeanddate.com
  • SunCalc.org
  • Photographer's Ephemeris app

Yes. Reduced winter sunlight may cause:

  • Seasonal Affective Disorder (SAD)
  • Vitamin D deficiency

Solution: Light therapy lamps & midday walks