Question 1

How many hours of daylight does Vientiane get today?

Accepted Answer

Vientiane currently gets approximately 11 hours and 37 minutes of daylight today. This varies throughout the year — days are longest around the summer solstice (June in the Northern Hemisphere, December in the Southern Hemisphere) and shortest around the winter solstice. Because Vientiane is near the equator, day length stays relatively consistent, typically between 11 and 13 hours. Our calculations use the SunCalc astronomical library for accuracy within 1–2 minutes.

Question 2

What time does the sun rise in Vientiane?

Accepted Answer

Sunrise times in Vientiane change throughout the year based on the Earth's axial tilt and the city's position at 18.0° latitude. Use the table above to see today's exact sunrise time, as well as dawn (civil twilight) and other twilight phases. The earliest sunrise typically occurs around the summer solstice, while the latest sunrise happens near the winter solstice. Near the equator, sunrise times vary by less than an hour across the year. All sunrise calculations are based on NOAA solar position algorithms via the SunCalc library.

Question 3

What time does the sun set in Vientiane?

Accepted Answer

Sunset times in Vientiane vary by season due to the Earth's orbital mechanics and the city's latitude of 18.0°. Check the table above for today's exact sunset time, including dusk and twilight phases. The latest sunset typically occurs a few days after the summer solstice, while the earliest sunset happens a few days before the winter solstice. Near the equator, sunset times remain fairly consistent throughout the year, typically varying by less than an hour.

Question 4

How does day length change throughout the year in Vientiane?

Accepted Answer

Vientiane is located near the equator at 18.0° latitude, so day length varies relatively little throughout the year — typically between about 11 and 13 hours. The sun rises and sets at roughly the same time year-round, and twilight transitions are short and abrupt compared to higher latitudes. This consistency makes Vientiane one of the more predictable locations for planning outdoor activities. The slight variation that does occur peaks around the equinoxes in March and September.

Question 5

What is civil twilight in Vientiane?

Accepted Answer

Civil twilight in Vientiane is the period when the sun is between 0° and 6° below the horizon. During civil twilight, there is enough natural light for most outdoor activities without artificial lighting. It occurs just before sunrise (dawn) and just after sunset (dusk). Near the equator, civil twilight is relatively short, typically lasting only 20–25 minutes. The exact duration for Vientiane is shown in the twilight data table above.

Question 6

What are the different twilight phases?

Accepted Answer

There are three twilight phases, each defined by the sun's angle below the horizon. Civil twilight (0°–6°) is the brightest phase, with enough light for outdoor activities without artificial lighting. Nautical twilight (6°–12°) is dimmer but still allows sailors to see the horizon for celestial navigation. Astronomical twilight (12°–18°) is nearly dark, with only the faintest glow on the horizon, and most stars become visible. Below 18° is considered full astronomical night. The duration of each phase varies by latitude and season — our data table above shows all twilight phases for Vientiane.

Question 7

When is the longest day in Vientiane?

Accepted Answer

The longest day in Vientiane occurs around the summer solstice. For Vientiane in the Northern Hemisphere, the longest day is around June 20–21. On this date, Vientiane experiences its earliest sunrise and near-latest sunset of the year. Near the equator, the longest day is only slightly longer than the shortest, differing by about 1–2 hours. The shortest day (winter solstice) occurs approximately six months later.

Question 8

Does daylight saving time affect sunrise and sunset times in Vientiane?

Accepted Answer

Vientiane does not observe daylight saving time, so sunrise and sunset times change only due to natural seasonal variation throughout the year. The gradual shift in sunrise and sunset times follows a smooth curve driven by the Earth's axial tilt and orbital position. This makes it easier to predict sunrise and sunset patterns in Vientiane compared to cities that observe DST, where clock changes create abrupt jumps in the schedule.

Astronomical Dawn	4:53:24 AM
Nautical Dawn	5:18:51 AM
Civil Dawn	5:44:26 AM
Sunrise	6:06:34 AM
Golden Hour End	6:36:04 AM
Solar Noon	11:54:53 AM
Golden Hour Start	5:13:42 PM
Sunset	5:43:12 PM
Civil Dusk	6:05:20 PM
Nautical Dusk	6:30:55 PM
Astronomical Dusk	6:56:22 PM
Day Length	11h 37m

Moonrise	4:10:50 PM
Moonset	4:57:47 AM
Moon Phase	🌔 Waxing Gibbous
Illumination	95%

Date	Sunrise	Sunset	Day Length	Moonrise	Moonset	Phase
Oct 1, Thu	6:00 AM	6:00 PM	11h 59m	9:26 PM	10:14 AM	🌖
Oct 2, Fri	6:01 AM	5:59 PM	11h 58m	10:28 PM	11:20 AM	🌗
Oct 3, Sat	6:01 AM	5:58 PM	11h 57m	11:35 PM	12:24 PM	🌗
Oct 4, Sun	6:01 AM	5:57 PM	11h 56m	12:42 AM	1:23 PM	🌗
Oct 5, Mon	6:01 AM	5:56 PM	11h 55m	1:46 AM	2:16 PM	🌗
Oct 6, Tue	6:01 AM	5:56 PM	11h 54m	2:47 AM	3:03 PM	🌘
Oct 7, Wed	6:02 AM	5:55 PM	11h 53m	3:45 AM	3:45 PM	🌘
Oct 8, Thu	6:02 AM	5:54 PM	11h 52m	4:40 AM	4:23 PM	🌘
Oct 9, Fri	6:02 AM	5:53 PM	11h 51m	5:34 AM	5:01 PM	🌑
Oct 10, Sat	6:02 AM	5:52 PM	11h 50m	6:26 AM	5:36 PM	🌑
Oct 11, Sun	6:02 AM	5:52 PM	11h 49m	—	6:13 PM	🌑
Oct 12, Mon	6:03 AM	5:51 PM	11h 48m	7:19 AM	6:52 PM	🌑
Oct 13, Tue	6:03 AM	5:50 PM	11h 47m	8:13 AM	7:34 PM	🌒
Oct 14, Wed	6:03 AM	5:49 PM	11h 46m	9:06 AM	8:18 PM	🌒
Oct 15, Thu	6:03 AM	5:49 PM	11h 45m	10:00 AM	9:07 PM	🌒
Oct 16, Fri	6:04 AM	5:48 PM	11h 44m	10:52 AM	9:59 PM	🌒
Oct 17, Sat	6:04 AM	5:47 PM	11h 43m	11:41 AM	10:51 PM	🌓
Oct 18, Sun	6:04 AM	5:47 PM	11h 42m	12:27 PM	11:44 PM	🌓
Oct 19, Mon	6:04 AM	5:46 PM	11h 41m	1:08 PM	12:36 AM	🌓
Oct 20, Tue	6:05 AM	5:45 PM	11h 40m	1:48 PM	1:28 AM	🌓
Oct 21, Wed	6:05 AM	5:45 PM	11h 39m	2:24 PM	2:19 AM	🌔
Oct 22, Thu	6:05 AM	5:44 PM	11h 39m	2:59 PM	3:10 AM	🌔
Oct 23, Fri	6:06 AM	5:43 PM	11h 38m	3:35 PM	4:03 AM	🌔
Oct 24, Sat	6:06 AM	5:43 PM	11h 37m	4:10 PM	4:57 AM	🌔
Oct 25, Sun	6:06 AM	5:42 PM	11h 36m	4:49 PM	5:54 AM	🌕
Oct 26, Mon	6:07 AM	5:42 PM	11h 35m	5:32 PM	6:55 AM	🌕
Oct 27, Tue	6:07 AM	5:41 PM	11h 34m	6:19 PM	—	🌕
Oct 28, Wed	6:08 AM	5:40 PM	11h 33m	7:13 PM	7:59 AM	🌖
Oct 29, Thu	6:08 AM	5:40 PM	11h 32m	8:13 PM	9:05 AM	🌖
Oct 30, Fri	6:08 AM	5:39 PM	11h 31m	9:19 PM	10:10 AM	🌖
Oct 31, Sat	6:09 AM	5:39 PM	11h 30m	10:26 PM	11:11 AM	🌖

Sunrise & Sunset in Vientiane, Laos

Sun Times

Moon

Monthly Summary — October 2026

Twilight Phases in Vientiane

Explore Vientiane

Frequently Asked Questions about Sunrise & Sunset in Vientiane

Sunrise & Sunset in Other Cities