Question 1

How many hours of daylight does Ulaanbaatar get today?

Accepted Answer

Ulaanbaatar currently gets approximately 15 hours and 23 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	2:44:49 AM
Nautical Dawn	3:50:13 AM
Civil Dawn	4:40:19 AM
Sunrise	5:18:15 AM
Golden Hour End	6:04:22 AM
Solar Noon	12:59:57 PM
Golden Hour Start	7:55:33 PM
Sunset	8:41:39 PM
Civil Dusk	9:19:36 PM
Nautical Dusk	10:09:42 PM
Astronomical Dusk	11:15:06 PM
Day Length	15h 23m

Moonrise	3:46:59 PM
Moonset	12:18:20 AM
Moon Phase	🌓 First Quarter
Illumination	66%

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

Sunrise & Sunset in Ulaanbaatar, Mongolia

Sun Times

Moon

Monthly Summary — July 2026

Twilight Phases in Ulaanbaatar

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