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Loandjili

-4.756° S   11.858° E  ·  7 M
64 /100
PEAK
Worth setting up — 7 hours of workable sky from 20:00.
BEST WINDOW 20:00–03:00 · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.30
Seeing
0.90
Cloud
5%
Moon
0%

Good tonight

Hour by hour, local to Loandjili. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
0
29
63
63
63
64
62
51
35
26
0
0
0
BEST WINDOW
Low cloud
37%
5%
6%
7%
7%
6%
8%
23%
45%
59%
100%
100%
100%
Mid cloud
0%
1%
0%
0%
0%
0%
0%
0%
4%
2%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
Transparency
0.36
0.30
0.27
0.26
0.26
0.24
0.23
0.21
0.20
0.20
0.21
0.23
0.24
Seeing
0.87
0.87
0.78
0.82
0.88
0.89
0.90
0.89
0.89
0.82
0.83
0.85
0.86
Moon clear
0%
down
down
down
down
down
down
down
down
down
down
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Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Why this hour scored what it did
18 Clouded out · 0/100
Starting from
100
Cloud
−43
Transparency
−14
Seeing
−1
Moonlight
−0
Darkness
−41
Score
0
CLOUD 37% LOW 37% MID 0% HIGH 0% SUN 3.1° MOON 4.4° / 0% WIND 3 TEMP 22°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

SET UP 19:30 · OBSERVE 20:00–03:00 · 7H · MEAN 59

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

18202200020406
ASTRONOMICAL DARK FROM 20:00
SET UP 18:30 · OBSERVE 19:00–03:00 · 8H · MEAN 68

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

18202200020406
CLOUD BREAKS 19:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 19:30 · OBSERVE 20:00–02:00 · 6H · MEAN 59

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

18202200020406
ASTRONOMICAL DARK FROM 20:00CLOUD RETURNS 02:00
SET UP 19:30 · OBSERVE 20:00–02:00 · 6H · MEAN 48

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

18202200020406
ASTRONOMICAL DARK FROM 20:00CLOUD RETURNS 02:00
SET UP 19:30 · OBSERVE 20:00–03:00 · 7H · MEAN 62

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

18202200020406
ASTRONOMICAL DARK FROM 20:00
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The next week of nights

Tonight · 12 Aug
64
Good
MOON 0%
20:00–03:00
Tomorrow · 13 Aug
68
Good
MOON 2%
20:00–02:00
Friday · 14 Aug
66
Good
MOON 6%
21:00–04:00
Saturday · 15 Aug
1
Clouded out
MOON 13%
Sunday · 16 Aug
1
Clouded out
MOON 21%
Monday · 17 Aug
0
Clouded out
MOON 30%
Tuesday · 18 Aug
65
Good
MOON 39%
01:00–02:00
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Nearby locations

About this forecast

Conditions for Loandjili, Congo - Brazzaville are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →