Sunrise and Sunset times in Sergelen, Mongolia 
Sergelen
Dornod
Time zone: Asia/Choibalsan, UTC 8 h.
Latitude: 48.5667, Longitude: 114.083
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 04:25:39 | 12:27:33 | 20:29:28 | 16h 3m 49s |
| 2025-Jul-02, Wednesday | 04:26:17 | 12:27:45 | 20:29:12 | 16h 2m 55s |
| 2025-Jul-03, Thursday | 04:26:58 | 12:27:56 | 20:28:54 | 16h 1m 56s |
| 2025-Jul-04, Friday | 04:27:41 | 12:28:07 | 20:28:32 | 16h 0m 51s |
| 2025-Jul-05, Saturday | 04:28:25 | 12:28:17 | 20:28:09 | 15h 59m 44s |
| 2025-Jul-06, Sunday | 04:29:12 | 12:28:27 | 20:27:42 | 15h 58m 30s |
| 2025-Jul-07, Monday | 04:30:01 | 12:28:37 | 20:27:13 | 15h 57m 12s |
| 2025-Jul-08, Tuesday | 04:30:52 | 12:28:46 | 20:26:41 | 15h 55m 49s |
| 2025-Jul-09, Wednesday | 04:31:44 | 12:28:55 | 20:26:07 | 15h 54m 23s |
| 2025-Jul-10, Thursday | 04:32:39 | 12:29:04 | 20:25:29 | 15h 52m 50s |
| 2025-Jul-11, Friday | 04:33:35 | 12:29:12 | 20:24:50 | 15h 51m 15s |
| 2025-Jul-12, Saturday | 04:34:32 | 12:29:20 | 20:24:08 | 15h 49m 36s |
| 2025-Jul-13, Sunday | 04:35:32 | 12:29:27 | 20:23:23 | 15h 47m 51s |
| 2025-Jul-14, Monday | 04:36:32 | 12:29:34 | 20:22:36 | 15h 46m 4s |
| 2025-Jul-15, Tuesday | 04:37:35 | 12:29:40 | 20:21:46 | 15h 44m 11s |
| 2025-Jul-16, Wednesday | 04:38:38 | 12:29:46 | 20:20:54 | 15h 42m 16s |
| 2025-Jul-17, Thursday | 04:39:43 | 12:29:51 | 20:19:59 | 15h 40m 16s |
| 2025-Jul-18, Friday | 04:40:50 | 12:29:56 | 20:19:02 | 15h 38m 12s |
| 2025-Jul-19, Saturday | 04:41:57 | 12:30:00 | 20:18:03 | 15h 36m 6s |
| 2025-Jul-20, Sunday | 04:43:06 | 12:30:04 | 20:17:01 | 15h 33m 55s |
| 2025-Jul-21, Monday | 04:44:16 | 12:30:07 | 20:15:57 | 15h 31m 41s |
| 2025-Jul-22, Tuesday | 04:45:27 | 12:30:09 | 20:14:51 | 15h 29m 24s |
| 2025-Jul-23, Wednesday | 04:46:39 | 12:30:11 | 20:13:43 | 15h 27m 4s |
| 2025-Jul-24, Thursday | 04:47:52 | 12:30:12 | 20:12:33 | 15h 24m 41s |
| 2025-Jul-25, Friday | 04:49:06 | 12:30:13 | 20:11:20 | 15h 22m 14s |
| 2025-Jul-26, Saturday | 04:50:21 | 12:30:13 | 20:10:06 | 15h 19m 45s |
| 2025-Jul-27, Sunday | 04:51:36 | 12:30:13 | 20:08:49 | 15h 17m 13s |
| 2025-Jul-28, Monday | 04:52:53 | 12:30:12 | 20:07:31 | 15h 14m 38s |
| 2025-Jul-29, Tuesday | 04:54:10 | 12:30:10 | 20:06:11 | 15h 12m 1s |
| 2025-Jul-30, Wednesday | 04:55:27 | 12:30:08 | 20:04:48 | 15h 9m 21s |
| 2025-Jul-31, Thursday | 04:56:46 | 12:30:05 | 20:03:24 | 15h 6m 38s |
Sergelen on Mongolia map:
Cities in the same time zone Asia/Choibalsan
Ulaandel (Sühbaatar), Haylaastay (Sühbaatar), Hongor (Sühbaatar), Hoovor (Dornod), Hulstay (Dornod), Sumber (Dornod), Javarthushuu (Dornod), Naranbulag (Dornod), Ondorhushuu (Dornod), Shireet (Sühbaatar), Sumiyn Bulag (Dornod), Bayasgalant (Sühbaatar), Bayan (Dornod), Tsagaanders (Dornod), Hatavch (Sühbaatar), Havirga (Sühbaatar), Chonogol (Sühbaatar), Dashbalbar (Dornod), Sergelen (Sühbaatar), Ovoot (Sühbaatar), Dzuunbulag (Sühbaatar), Dzuunbulag (Dornod), Ereentsav (Dornod)
Largest Populated Areas in Mongolia
Ulaanbaatar (Ulaanbaatar), Erdenet (Orhon), Darhan (Selenge), Ulaangom (Uvs), Olgiy (Bayan-Ölgiy), Choybalsan (Dornod), Hovd (Hovd), Arvayheer (Övörhangay), Moron (Hövsgöl), Bayanhongor (Bayanhongor), Suhbaatar (Selenge), Tsetserleg (Arhangay), Dzuunharaa (Selenge), Dzuunmod (Töv), Bulgan (Bulgan), Baruun-Urt (Sühbaatar), Dalanzadgad (Ömnögovĭ), Ondorhaan (Hentiy), Saynshand (Dornogovĭ), Uliastay (Dzavhan), Ulaan-Uul (Dornogovĭ), Mandalgovi (Dundgovĭ), Hodrogo (Dzavhan), Gatsuurt (Ulaanbaatar), Buural (Darhan-Uul), Lamaiin Hiid (Orhon), Haylaastay (Sühbaatar), Torhurah (Ulaanbaatar), Sharga Moritoyn Dyan (Ulaanbaatar), Damba Darajayn Hiid (Ulaanbaatar)
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