Question 1

How many hours of daylight does Ulaanbaatar get today?

Accepted Answer

Ulaanbaatar currently gets approximately 10 hours and 25 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. At 47.9° latitude, Ulaanbaatar sees moderate variation, with summer days noticeably longer than winter days. Our calculations use the SunCalc astronomical library for accuracy within 1–2 minutes.

Question 2

What time does the sun rise in Ulaanbaatar?

Accepted Answer

Sunrise times in Ulaanbaatar change throughout the year based on the Earth's axial tilt and the city's position at 47.9° 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. The difference between earliest and latest sunrise can be over two hours. All sunrise calculations are based on NOAA solar position algorithms via the SunCalc library.

Question 3

What time does the sun set in Ulaanbaatar?

Accepted Answer

Sunset times in Ulaanbaatar vary by season due to the Earth's orbital mechanics and the city's latitude of 47.9°. 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. At mid-latitudes, you can expect sunset to vary by 2–3 hours across the seasons.

Question 4

How does day length change throughout the year in Ulaanbaatar?

Accepted Answer

Ulaanbaatar at 47.9° latitude experiences moderate seasonal day length variation. Summer days are noticeably longer than winter days, with daylight typically ranging from about 8 to 16 hours depending on the time of year. The rate of change is fastest around the equinoxes (March and September), when day length changes by several minutes each day. Around the solstices, the rate of change slows as day length approaches its maximum or minimum. This makes spring and autumn the seasons with the most noticeable daily changes in sunrise and sunset times.

Question 5

What is civil twilight in Ulaanbaatar?

Accepted Answer

Civil twilight in Ulaanbaatar 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). At mid-latitudes, civil twilight typically lasts about 25–35 minutes. The exact duration for Ulaanbaatar 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 Ulaanbaatar.

Question 7

When is the longest day in Ulaanbaatar?

Accepted Answer

The longest day in Ulaanbaatar occurs around the summer solstice. For Ulaanbaatar in the Northern Hemisphere, the longest day is around June 20–21. On this date, Ulaanbaatar experiences its earliest sunrise and near-latest sunset of the year. At 47.9° latitude, the longest day is typically 14–16 hours of daylight. The shortest day (winter solstice) occurs approximately six months later.

Question 8

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

Accepted Answer

Ulaanbaatar 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 Ulaanbaatar compared to cities that observe DST, where clock changes create abrupt jumps in the schedule.

Astronomical Dawn	5:41:25 AM
Nautical Dawn	6:17:14 AM
Civil Dawn	6:53:20 AM
Sunrise	7:25:03 AM
Golden Hour End	8:08:37 AM
Solar Noon	12:37:48 PM
Golden Hour Start	5:06:58 PM
Sunset	5:50:32 PM
Civil Dusk	6:22:15 PM
Nautical Dusk	6:58:22 PM
Astronomical Dusk	7:34:10 PM
Day Length	10h 25m

Moonrise	4:33:58 PM
Moonset	6:11:10 AM
Moon Phase	🌔 Waxing Gibbous
Illumination	95%

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

Sunrise & Sunset in Ulaanbaatar, Mongolia

Sun Times

Moon

Monthly Summary — October 2026

Twilight Phases in Ulaanbaatar

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Frequently Asked Questions about Sunrise & Sunset in Ulaanbaatar

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