ISS TonightDark skies over Ulan Bator, Mongolia
The next moonless night in Ulan Bator is Sat 7 Nov, dark from 19:11 to 06:00. 6 of the next 30 nights have no Moon at all during full darkness.
Dark here means astronomical darkness (the Sun at least 18° below the horizon) with the Moon below the horizon: the best conditions for faint stars, the Milky Way and astrophotography. Light pollution and weather aren’t included.
| Night of | Moon-free dark hours | Total | Moon |
|---|---|---|---|
| Tue 3 Nov | 19:17–01:48 | 6 h 32 min | 30% lit |
| Wed 4 Nov | 19:15–03:03 | 7 h 48 min | 21% lit |
| Thu 5 Nov | 19:14–04:16 | 9 h 03 min | 13% lit |
| Fri 6 Nov | 19:13–05:29 | 10 h 16 min | 7% lit |
| Sat 7 Nov | 19:11–06:00 | 10 h 49 min | 3% lit |
| Sun 8 Nov | 19:10–06:02 | 10 h 51 min | 1% lit |
| Mon 9 Nov | 19:09–06:03 | 10 h 54 min | 0% lit |
| Tue 10 Nov | 19:08–06:04 | 10 h 56 min | 2% lit |
| Wed 11 Nov | 19:07–06:06 | 10 h 59 min | 6% lit |
| Thu 12 Nov | 19:06–06:07 | 11 h 01 min | 11% lit |
| Fri 13 Nov | 19:37–06:08 | 10 h 31 min | 17% lit |
| Sat 14 Nov | 20:41–06:10 | 9 h 29 min | 25% lit |
| Sun 15 Nov | 21:48–06:11 | 8 h 22 min | 33% lit |
| Mon 16 Nov | 22:57–06:12 | 7 h 15 min | 42% lit |
| Tue 17 Nov | 00:07–06:13 | 6 h 06 min | 52% lit |
| Wed 18 Nov | 01:17–06:14 | 4 h 58 min | 62% lit |
| Thu 19 Nov | 02:28–06:16 | 3 h 47 min | 72% lit |
| Fri 20 Nov | 03:42–06:17 | 2 h 35 min | 81% lit |
| Sat 21 Nov | 05:01–06:18 | 1 h 18 min | 88% lit |
| Sun 22 Nov | Moon up all night | – | 95% lit |
| Mon 23 Nov | Moon up all night | – | 99% lit |
| Tue 24 Nov | Moon up all night | – | 100% lit |
| Wed 25 Nov | Moon up all night | – | 98% lit |
| Thu 26 Nov | Moon up all night | – | 94% lit |
| Fri 27 Nov | 18:55–19:27 | 0 h 33 min | 87% lit |
| Sat 28 Nov | 18:54–20:52 | 1 h 58 min | 77% lit |
| Sun 29 Nov | 18:54–22:17 | 3 h 23 min | 67% lit |
| Mon 30 Nov | 18:53–23:37 | 4 h 44 min | 56% lit |
| Tue 1 Dec | 18:53–00:54 | 6 h 01 min | 45% lit |
| Wed 2 Dec | 18:53–02:08 | 7 h 15 min | 35% lit |
Times are local to Ulan Bator (Asia/Ulaanbaatar). Each bar runs from midday to midday: grey is full darkness with the Moon up, dark blue is full darkness with no Moon.
Also for Ulan Bator: when the ISS passes over.
Computed with astronomy-engine from the Sun’s and Moon’s positions; moonrise and moonset follow the standard almanac definition. Checked against timeanddate.com and the US Naval Observatory for London, November 2026. Updated twice a day.