Sunrise and Sunset times in Phen, Thailand 
Phen
Udon Thani
Time zone: Asia/Bangkok, UTC 7 h.
Latitude: 17.6961, Longitude: 102.907
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jun-01, Sunday | 05:32:36 | 12:06:13 | 18:39:51 | 13h 7m 15s |
| 2025-Jun-02, Monday | 05:32:33 | 12:06:23 | 18:40:12 | 13h 7m 39s |
| 2025-Jun-03, Tuesday | 05:32:31 | 12:06:33 | 18:40:34 | 13h 8m 3s |
| 2025-Jun-04, Wednesday | 05:32:31 | 12:06:43 | 18:40:55 | 13h 8m 24s |
| 2025-Jun-05, Thursday | 05:32:31 | 12:06:53 | 18:41:16 | 13h 8m 45s |
| 2025-Jun-06, Friday | 05:32:32 | 12:07:04 | 18:41:36 | 13h 9m 4s |
| 2025-Jun-07, Saturday | 05:32:34 | 12:07:15 | 18:41:56 | 13h 9m 22s |
| 2025-Jun-08, Sunday | 05:32:37 | 12:07:27 | 18:42:16 | 13h 9m 39s |
| 2025-Jun-09, Monday | 05:32:41 | 12:07:38 | 18:42:36 | 13h 9m 55s |
| 2025-Jun-10, Tuesday | 05:32:46 | 12:07:50 | 18:42:55 | 13h 10m 9s |
| 2025-Jun-11, Wednesday | 05:32:51 | 12:08:02 | 18:43:14 | 13h 10m 23s |
| 2025-Jun-12, Thursday | 05:32:57 | 12:08:15 | 18:43:32 | 13h 10m 35s |
| 2025-Jun-13, Friday | 05:33:04 | 12:08:27 | 18:43:50 | 13h 10m 46s |
| 2025-Jun-14, Saturday | 05:33:12 | 12:08:40 | 18:44:07 | 13h 10m 55s |
| 2025-Jun-15, Sunday | 05:33:21 | 12:08:53 | 18:44:24 | 13h 11m 3s |
| 2025-Jun-16, Monday | 05:33:31 | 12:09:06 | 18:44:41 | 13h 11m 10s |
| 2025-Jun-17, Tuesday | 05:33:41 | 12:09:19 | 18:44:56 | 13h 11m 15s |
| 2025-Jun-18, Wednesday | 05:33:52 | 12:09:32 | 18:45:12 | 13h 11m 20s |
| 2025-Jun-19, Thursday | 05:34:03 | 12:09:45 | 18:45:26 | 13h 11m 23s |
| 2025-Jun-20, Friday | 05:34:15 | 12:09:58 | 18:45:40 | 13h 11m 25s |
| 2025-Jun-21, Saturday | 05:34:28 | 12:10:11 | 18:45:54 | 13h 11m 26s |
| 2025-Jun-22, Sunday | 05:34:42 | 12:10:24 | 18:46:06 | 13h 11m 24s |
| 2025-Jun-23, Monday | 05:34:56 | 12:10:37 | 18:46:18 | 13h 11m 22s |
| 2025-Jun-24, Tuesday | 05:35:10 | 12:10:50 | 18:46:29 | 13h 11m 19s |
| 2025-Jun-25, Wednesday | 05:35:25 | 12:11:03 | 18:46:40 | 13h 11m 15s |
| 2025-Jun-26, Thursday | 05:35:41 | 12:11:15 | 18:46:50 | 13h 11m 9s |
| 2025-Jun-27, Friday | 05:35:57 | 12:11:28 | 18:46:58 | 13h 11m 1s |
| 2025-Jun-28, Saturday | 05:36:14 | 12:11:40 | 18:47:06 | 13h 10m 52s |
| 2025-Jun-29, Sunday | 05:36:31 | 12:11:52 | 18:47:14 | 13h 10m 43s |
| 2025-Jun-30, Monday | 05:36:48 | 12:12:04 | 18:47:20 | 13h 10m 32s |
Phen on Thailand map:
Cities in the same time zone Asia/Bangkok
Bangkok (Krung Thep Maha Nakhon), Chiang Mai (Chiang Mai), Samut Prakan (Samut Prakan), Nakhon Ratchasima (Nakhon Ratchasima), Hat Yai (Songkhla), Ubon Ratchathani (Ubon Ratchathani), Nonthaburi (Nonthaburi), Khon Kaen (Khon Kaen), Udon Thani (Udon Thani), Nakhon Si Thammarat (Nakhon Si Thammarat), Chon Buri (Chon Buri), Lampang (Lampang), Si Racha (Chon Buri), Phitsanulok (Phitsanulok), Surat Thani (Surat Thani), Pathum Thani (Pathum Thani), Pattani (Pattani), Yala (Yala), Trang (Trang), Phra Nakhon Si Ayutthaya (Phra Nakhon Si Ayutthaya), Phuket (Phuket), Nakhon Pathom (Nakhon Pathom), Chiang Rai (Chiang Rai), Nakhon Sawan (Nakhon Sawan), Ratchaburi (Ratchaburi), Nong Khai (Nong Khai), Chanthaburi (Chanthaburi), Phetchaburi (Phetchaburi), Chumphon (Chumphon), Nan (Nan)
Largest Populated Areas in Thailand
Bangkok (Krung Thep Maha Nakhon), Chiang Mai (Chiang Mai), Samut Prakan (Samut Prakan), Nakhon Ratchasima (Nakhon Ratchasima), Hat Yai (Songkhla), Ubon Ratchathani (Ubon Ratchathani), Nonthaburi (Nonthaburi), Khon Kaen (Khon Kaen), Udon Thani (Udon Thani), Nakhon Si Thammarat (Nakhon Si Thammarat), Chon Buri (Chon Buri), Lampang (Lampang), Si Racha (Chon Buri), Phitsanulok (Phitsanulok), Surat Thani (Surat Thani), Pathum Thani (Pathum Thani), Pattani (Pattani), Yala (Yala), Trang (Trang), Phra Nakhon Si Ayutthaya (Phra Nakhon Si Ayutthaya), Phuket (Phuket), Nakhon Pathom (Nakhon Pathom), Chiang Rai (Chiang Rai), Nakhon Sawan (Nakhon Sawan), Ratchaburi (Ratchaburi), Nong Khai (Nong Khai), Chanthaburi (Chanthaburi), Phetchaburi (Phetchaburi), Chumphon (Chumphon), Nan (Nan)
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