ISS TonightDark skies over Porto Alegre, Brazil
The next moonless night in Porto Alegre is Fri 6 Nov, dark from 20:19 to 03:57. 4 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 | 20:15–02:36 | 6 h 20 min | 26% lit |
| Wed 4 Nov | 20:17–03:05 | 6 h 49 min | 17% lit |
| Thu 5 Nov | 20:18–03:34 | 7 h 17 min | 10% lit |
| Fri 6 Nov | 20:19–03:57 | 7 h 38 min | 5% lit |
| Sat 7 Nov | 20:20–03:56 | 7 h 36 min | 2% lit |
| Sun 8 Nov | 20:21–03:55 | 7 h 34 min | 0% lit |
| Mon 9 Nov | 20:22–03:54 | 7 h 32 min | 1% lit |
| Tue 10 Nov | 20:30–03:53 | 7 h 24 min | 3% lit |
| Wed 11 Nov | 21:25–03:53 | 6 h 28 min | 8% lit |
| Thu 12 Nov | 22:16–03:52 | 5 h 36 min | 13% lit |
| Fri 13 Nov | 23:01–03:51 | 4 h 50 min | 20% lit |
| Sat 14 Nov | 23:41–03:50 | 4 h 09 min | 28% lit |
| Sun 15 Nov | 00:17–03:49 | 3 h 32 min | 37% lit |
| Mon 16 Nov | 00:49–03:49 | 3 h 00 min | 47% lit |
| Tue 17 Nov | 01:18–03:48 | 2 h 30 min | 56% lit |
| Wed 18 Nov | 01:47–03:47 | 2 h 01 min | 66% lit |
| Thu 19 Nov | 02:15–03:46 | 1 h 31 min | 76% lit |
| Fri 20 Nov | 02:46–03:46 | 1 h 00 min | 84% lit |
| Sat 21 Nov | 03:20–03:45 | 0 h 25 min | 91% lit |
| Sun 22 Nov | Moon up all night | – | 97% lit |
| Mon 23 Nov | Moon up all night | – | 99% lit |
| Tue 24 Nov | Moon up all night | – | 99% lit |
| Wed 25 Nov | Moon up all night | – | 96% lit |
| Thu 26 Nov | 20:41–21:48 | 1 h 07 min | 91% lit |
| Fri 27 Nov | 20:42–22:42 | 2 h 00 min | 83% lit |
| Sat 28 Nov | 20:43–23:27 | 2 h 44 min | 73% lit |
| Sun 29 Nov | 20:44–00:05 | 3 h 21 min | 62% lit |
| Mon 30 Nov | 20:45–00:38 | 3 h 53 min | 51% lit |
| Tue 1 Dec | 20:46–01:08 | 4 h 22 min | 41% lit |
| Wed 2 Dec | 20:47–01:37 | 4 h 50 min | 31% lit |
Times are local to Porto Alegre (America/Sao Paulo). 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 Porto Alegre: when the ISS passes over.
Other cities in Brazil
Sao Paulo · Rio de Janeiro · Belo Horizonte · Salvador · Fortaleza · Manaus · Brasilia · Curitiba
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.