Sunrise and Sunset times in Haikou, China 
Haikou
Hainan
Time zone: Asia/Chongqing, UTC 8 h.
Latitude: 20.05, Longitude: 110.32
2 046 190 people
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jun-01, Sunday | 05:58:34 | 12:36:34 | 19:14:34 | 13h 16m 0s |
| 2025-Jun-02, Monday | 05:58:30 | 12:36:43 | 19:14:57 | 13h 16m 27s |
| 2025-Jun-03, Tuesday | 05:58:26 | 12:36:53 | 19:15:20 | 13h 16m 54s |
| 2025-Jun-04, Wednesday | 05:58:24 | 12:37:03 | 19:15:43 | 13h 17m 19s |
| 2025-Jun-05, Thursday | 05:58:23 | 12:37:14 | 19:16:05 | 13h 17m 42s |
| 2025-Jun-06, Friday | 05:58:23 | 12:37:25 | 19:16:27 | 13h 18m 4s |
| 2025-Jun-07, Saturday | 05:58:23 | 12:37:36 | 19:16:49 | 13h 18m 26s |
| 2025-Jun-08, Sunday | 05:58:25 | 12:37:47 | 19:17:10 | 13h 18m 45s |
| 2025-Jun-09, Monday | 05:58:28 | 12:37:59 | 19:17:30 | 13h 19m 2s |
| 2025-Jun-10, Tuesday | 05:58:31 | 12:38:11 | 19:17:51 | 13h 19m 20s |
| 2025-Jun-11, Wednesday | 05:58:36 | 12:38:23 | 19:18:10 | 13h 19m 34s |
| 2025-Jun-12, Thursday | 05:58:41 | 12:38:35 | 19:18:30 | 13h 19m 49s |
| 2025-Jun-13, Friday | 05:58:47 | 12:38:48 | 19:18:48 | 13h 20m 1s |
| 2025-Jun-14, Saturday | 05:58:55 | 12:39:00 | 19:19:06 | 13h 20m 11s |
| 2025-Jun-15, Sunday | 05:59:03 | 12:39:13 | 19:19:24 | 13h 20m 21s |
| 2025-Jun-16, Monday | 05:59:12 | 12:39:26 | 19:19:41 | 13h 20m 29s |
| 2025-Jun-17, Tuesday | 05:59:21 | 12:39:39 | 19:19:57 | 13h 20m 36s |
| 2025-Jun-18, Wednesday | 05:59:32 | 12:39:52 | 19:20:13 | 13h 20m 41s |
| 2025-Jun-19, Thursday | 05:59:43 | 12:40:05 | 19:20:27 | 13h 20m 44s |
| 2025-Jun-20, Friday | 05:59:55 | 12:40:18 | 19:20:42 | 13h 20m 47s |
| 2025-Jun-21, Saturday | 06:00:08 | 12:40:31 | 19:20:55 | 13h 20m 47s |
| 2025-Jun-22, Sunday | 06:00:21 | 12:40:44 | 19:21:07 | 13h 20m 46s |
| 2025-Jun-23, Monday | 06:00:36 | 12:40:57 | 19:21:19 | 13h 20m 43s |
| 2025-Jun-24, Tuesday | 06:00:50 | 12:41:10 | 19:21:30 | 13h 20m 40s |
| 2025-Jun-25, Wednesday | 06:01:06 | 12:41:23 | 19:21:40 | 13h 20m 34s |
| 2025-Jun-26, Thursday | 06:01:22 | 12:41:36 | 19:21:50 | 13h 20m 28s |
| 2025-Jun-27, Friday | 06:01:39 | 12:41:48 | 19:21:58 | 13h 20m 19s |
| 2025-Jun-28, Saturday | 06:01:56 | 12:42:01 | 19:22:06 | 13h 20m 10s |
| 2025-Jun-29, Sunday | 06:02:14 | 12:42:13 | 19:22:12 | 13h 19m 58s |
| 2025-Jun-30, Monday | 06:02:32 | 12:42:25 | 19:22:18 | 13h 19m 46s |
Haikou on China map:
Cities in the same time zone Asia/Chongqing
Guangzhou (Guangdong), Shenzhen (Guangdong), Chongqing (Chongqing), Dongguan (Guangdong), Chengdu (Sichuan), Xi'an (Shaanxi), Hechi (Guangxi), Guiyang (Guizhou), Kunming (Yunnan), Taiyuan (Shanxi), Changsha (Hunan), Xiangtan (Hunan), Lanzhou (Gansu), Gaoping (Sichuan), Nanning (Guangxi), Baotou (Inner Mongolia), Nanyang (Henan), Hohhot (Inner Mongolia), Luoyang (Henan), Jingling (Hubei), Sanzhou (Chongqing), Zhanjiang (Guangdong), Xiantao (Hubei), Luzhou (Sichuan), Liuzhou (Guangxi), Changde (Hunan), Neijiang (Sichuan), Suining (Sichuan), Mianyang (Sichuan), Yiyang (Hunan)
Largest Populated Areas in China
Shanghai (Shanghai), Beijing (Beijing), Guangzhou (Guangdong), Shenzhen (Guangdong), Wuhan (Hubei), Tianjin (Tianjin), Chongqing (Chongqing), Shenyang (Liaoning), Dongguan (Guangdong), Chengdu (Sichuan), Xi'an (Shaanxi), Hechi (Guangxi), Nanjing (Jiangsu), Guiyang (Guizhou), Harbin (Heilongjiang), Zhangzhou (Fujian), Changchun (Jilin), Dalian (Liaoning), Zibo (Shandong), Hangzhou (Zhejiang), Kunming (Yunnan), Taiyuan (Shanxi), Qingdao (Shandong), Jinan (Shandong), Zhengzhou (Henan), Fuzhou (Fujian), Changsha (Hunan), Xiangtan (Hunan), Lanzhou (Gansu), Xiamen (Fujian)
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