Sunrise and Sunset times in Astumbo, Guam 
Astumbo
Time zone: Pacific/Guam, UTC 10 h.
Latitude: 13.549, Longitude: 144.846
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jun-01, Sunday | 05:52:14 | 12:18:27 | 18:44:39 | 12h 52m 25s |
| 2025-Jun-02, Monday | 05:52:15 | 12:18:36 | 18:44:58 | 12h 52m 43s |
| 2025-Jun-03, Tuesday | 05:52:16 | 12:18:46 | 18:45:16 | 12h 53m 0s |
| 2025-Jun-04, Wednesday | 05:52:18 | 12:18:56 | 18:45:35 | 12h 53m 17s |
| 2025-Jun-05, Thursday | 05:52:20 | 12:19:07 | 18:45:53 | 12h 53m 33s |
| 2025-Jun-06, Friday | 05:52:24 | 12:19:17 | 18:46:11 | 12h 53m 47s |
| 2025-Jun-07, Saturday | 05:52:28 | 12:19:29 | 18:46:29 | 12h 54m 1s |
| 2025-Jun-08, Sunday | 05:52:33 | 12:19:40 | 18:46:47 | 12h 54m 14s |
| 2025-Jun-09, Monday | 05:52:38 | 12:19:52 | 18:47:05 | 12h 54m 27s |
| 2025-Jun-10, Tuesday | 05:52:45 | 12:20:03 | 18:47:22 | 12h 54m 37s |
| 2025-Jun-11, Wednesday | 05:52:52 | 12:20:16 | 18:47:39 | 12h 54m 47s |
| 2025-Jun-12, Thursday | 05:53:00 | 12:20:28 | 18:47:56 | 12h 54m 56s |
| 2025-Jun-13, Friday | 05:53:08 | 12:20:40 | 18:48:13 | 12h 55m 5s |
| 2025-Jun-14, Saturday | 05:53:17 | 12:20:53 | 18:48:29 | 12h 55m 12s |
| 2025-Jun-15, Sunday | 05:53:26 | 12:21:06 | 18:48:45 | 12h 55m 19s |
| 2025-Jun-16, Monday | 05:53:37 | 12:21:19 | 18:49:01 | 12h 55m 24s |
| 2025-Jun-17, Tuesday | 05:53:47 | 12:21:32 | 18:49:16 | 12h 55m 29s |
| 2025-Jun-18, Wednesday | 05:53:59 | 12:21:45 | 18:49:31 | 12h 55m 32s |
| 2025-Jun-19, Thursday | 05:54:11 | 12:21:58 | 18:49:45 | 12h 55m 34s |
| 2025-Jun-20, Friday | 05:54:23 | 12:22:11 | 18:49:59 | 12h 55m 36s |
| 2025-Jun-21, Saturday | 05:54:36 | 12:22:24 | 18:50:12 | 12h 55m 36s |
| 2025-Jun-22, Sunday | 05:54:49 | 12:22:37 | 18:50:25 | 12h 55m 36s |
| 2025-Jun-23, Monday | 05:55:03 | 12:22:50 | 18:50:37 | 12h 55m 34s |
| 2025-Jun-24, Tuesday | 05:55:17 | 12:23:03 | 18:50:49 | 12h 55m 32s |
| 2025-Jun-25, Wednesday | 05:55:32 | 12:23:16 | 18:51:00 | 12h 55m 28s |
| 2025-Jun-26, Thursday | 05:55:46 | 12:23:28 | 18:51:10 | 12h 55m 24s |
| 2025-Jun-27, Friday | 05:56:02 | 12:23:41 | 18:51:20 | 12h 55m 18s |
| 2025-Jun-28, Saturday | 05:56:17 | 12:23:53 | 18:51:29 | 12h 55m 12s |
| 2025-Jun-29, Sunday | 05:56:33 | 12:24:05 | 18:51:38 | 12h 55m 5s |
| 2025-Jun-30, Monday | 05:56:49 | 12:24:17 | 18:51:46 | 12h 54m 57s |
Astumbo on Guam map:
Cities in the same time zone Pacific/Guam
Maina , Capitol Hill , Hagta , Ipan , North Gayinero , Nimitz Hill , Naval Hospital , Mongmong , Mogfog , Mataguac , Mangilao , Maite , Tottotville , Machanao , Machananao West , Machananao East , Liguan , Adacao , Harmon Industrial Park , Dededo , Chalan Pago , Chaguian , Barrigada Heights , Barrigada , Asan , Apra Harbor , Apotgan , Andersen AFB , Agat , Agana Heights
Largest Populated Areas in Guam
Maina , Hagta , Ipan , Yona , North Gayinero , Nimitz Hill , Naval Hospital , Mongmong , Mogfog , Mataguac , Mangilao , Maite , Macheche , Machanao , Machananao West , Machananao East , Liguan , Adacao , Harmon Industrial Park , Dededo , Chalan Pago , Chaguian , Barrigada Heights , Barrigada , Asan , Apra Harbor , Apotgan , Andersen AFB , Agat , Agana Heights
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