Sunrise and Sunset times in Lang Son, Vietnam 
Today:
 Sunrise: 06:18:11
|
 Sunset: 17:09:44
|
Day Length: 10h 51m 33s
Time zone: Asia/Ho_Chi_Minh, UTC +7 h.
Latitude: 21.846, Longitude: 106.757
Lang Son
Lạng Sơn, Vietnam 
148 000 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Dec-01, Monday | 06:14:56 | 11:41:58 | 17:09:00 | 10h 54m 4s |
| 2025-Dec-02, Tuesday | 06:15:35 | 11:42:21 | 17:09:06 | 10h 53m 31s |
| 2025-Dec-03, Wednesday | 06:16:14 | 11:42:44 | 17:09:13 | 10h 52m 59s |
| 2025-Dec-04, Thursday | 06:16:54 | 11:43:08 | 17:09:22 | 10h 52m 28s |
| 2025-Dec-05, Friday | 06:17:33 | 11:43:33 | 17:09:32 | 10h 51m 59s |
| 2025-Dec-06, Saturday | 06:18:11 | 11:43:58 | 17:09:44 | 10h 51m 33s |
| 2025-Dec-07, Sunday | 06:18:50 | 11:44:23 | 17:09:57 | 10h 51m 7s |
| 2025-Dec-08, Monday | 06:19:28 | 11:44:49 | 17:10:11 | 10h 50m 43s |
| 2025-Dec-09, Tuesday | 06:20:06 | 11:45:16 | 17:10:26 | 10h 50m 20s |
| 2025-Dec-10, Wednesday | 06:20:43 | 11:45:43 | 17:10:43 | 10h 50m 0s |
| 2025-Dec-11, Thursday | 06:21:20 | 11:46:10 | 17:11:01 | 10h 49m 41s |
| 2025-Dec-12, Friday | 06:21:57 | 11:46:38 | 17:11:20 | 10h 49m 23s |
| 2025-Dec-13, Saturday | 06:22:33 | 11:47:06 | 17:11:40 | 10h 49m 7s |
| 2025-Dec-14, Sunday | 06:23:08 | 11:47:35 | 17:12:01 | 10h 48m 53s |
| 2025-Dec-15, Monday | 06:23:43 | 11:48:04 | 17:12:24 | 10h 48m 41s |
| 2025-Dec-16, Tuesday | 06:24:17 | 11:48:33 | 17:12:48 | 10h 48m 31s |
| 2025-Dec-17, Wednesday | 06:24:51 | 11:49:02 | 17:13:13 | 10h 48m 22s |
| 2025-Dec-18, Thursday | 06:25:24 | 11:49:31 | 17:13:39 | 10h 48m 15s |
| 2025-Dec-19, Friday | 06:25:56 | 11:50:01 | 17:14:06 | 10h 48m 10s |
| 2025-Dec-20, Saturday | 06:26:27 | 11:50:31 | 17:14:34 | 10h 48m 7s |
| 2025-Dec-21, Sunday | 06:26:58 | 11:51:00 | 17:15:03 | 10h 48m 5s |
| 2025-Dec-22, Monday | 06:27:28 | 11:51:30 | 17:15:32 | 10h 48m 4s |
| 2025-Dec-23, Tuesday | 06:27:57 | 11:52:00 | 17:16:03 | 10h 48m 6s |
| 2025-Dec-24, Wednesday | 06:28:25 | 11:52:30 | 17:16:35 | 10h 48m 10s |
| 2025-Dec-25, Thursday | 06:28:52 | 11:53:00 | 17:17:07 | 10h 48m 15s |
| 2025-Dec-26, Friday | 06:29:18 | 11:53:29 | 17:17:41 | 10h 48m 23s |
| 2025-Dec-27, Saturday | 06:29:43 | 11:53:59 | 17:18:15 | 10h 48m 32s |
| 2025-Dec-28, Sunday | 06:30:07 | 11:54:28 | 17:18:50 | 10h 48m 43s |
| 2025-Dec-29, Monday | 06:30:30 | 11:54:57 | 17:19:25 | 10h 48m 55s |
| 2025-Dec-30, Tuesday | 06:30:51 | 11:55:26 | 17:20:01 | 10h 49m 10s |
| 2025-Dec-31, Wednesday | 06:31:12 | 11:55:55 | 17:20:38 | 10h 49m 26s |
Day length in Lang Son during the year on the chart:
Lang Son on Vietnam map:
Locations in the same time zone Asia/Ho_Chi_Minh
Ho Chi Minh City (Hồ Chí Minh), Hanoi (Hà Nội), Haiphong (Hải Phòng), Can Tho (Cần Thơ), Quang Ha (Quảng Nam), Hue (Thừa Thiên-Huế), Quy Nhon (Bình Định), Bien Hoa (Đồng Nai), Vinh (Nghệ An), Thai Nguyen (Thái Nguyên), Nha Trang (Khánh Hòa), Ca Mau (Cà Mau), Viet Tri (Phú Thọ), Long Xuyen (An Giang), Buon Ma Thuot (Đắk Lắk), Phan Thiet (Bình Thuận), Soc Trang (Sóc Trăng), Rach Gia (Kiến Giang), Ap Da Loi (Lâm Đồng), Quang Ngai (Quảng Ngãi), Vung Tau (Bà Rịa-Vũng Tàu), Thu Dau Mot (Bình Dương), Nam Dinh (Nam Định), Bac Lieu (Bạc Liêu), Thai Binh (Thái Bình), Thanh Hoa (Thanh Hóa), Son Tay (Hà Nội), Dong Hoi (Quảng Bình), Phan Rang-Thap Cham (Ninh Thuận), Ha Long (Quảng Ninh)
Largest populated areas in Vietnam
Ho Chi Minh City (Hồ Chí Minh), Hanoi (Hà Nội), Haiphong (Hải Phòng), Can Tho (Cần Thơ), Quang Ha (Quảng Nam), Hue (Thừa Thiên-Huế), Quy Nhon (Bình Định), Bien Hoa (Đồng Nai), Vinh (Nghệ An), Thai Nguyen (Thái Nguyên), Nha Trang (Khánh Hòa), Ca Mau (Cà Mau), Long Xuyen (An Giang), Viet Tri (Phú Thọ), Buon Ma Thuot (Đắk Lắk), Phan Thiet (Bình Thuận), Rach Gia (Kiến Giang), Soc Trang (Sóc Trăng), Ap Da Loi (Lâm Đồng), Quang Ngai (Quảng Ngãi), Vung Tau (Bà Rịa-Vũng Tàu), Thu Dau Mot (Bình Dương), Nam Dinh (Nam Định), Bac Lieu (Bạc Liêu), Thai Binh (Thái Bình), Thanh Hoa (Thanh Hóa), Son Tay (Hà Nội), Dong Hoi (Quảng Bình), Phan Rang-Thap Cham (Ninh Thuận), Ha Long (Quảng Ninh)
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