GoodSeeing
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Rahad al Bardi

11.300° N   23.883° E  ·  592 M
84 /100
PEAK
A genuinely good night — 10 hours of clear, dark sky from 20:00.
BEST WINDOW 20:00–06:00 · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.80
Seeing
1.00
Cloud
2%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
20
21
22
23
00
01
02
03
04
05
06
79
77
70
73
84
81
80
73
63
73
0
BEST WINDOW
Low cloud
5%
2%
2%
0%
1%
0%
0%
1%
0%
0%
0%
Mid cloud
5%
4%
7%
6%
2%
2%
2%
2%
2%
1%
1%
High cloud
12%
16%
25%
24%
4%
4%
0%
10%
36%
13%
1%
Transparency
0.80
0.75
0.73
0.73
0.70
0.63
0.57
0.54
0.51
0.47
0.44
Seeing
1.00
1.00
1.00
1.00
1.00
0.93
0.90
0.90
0.95
1.00
1.00
Moon clear
down
down
down
down
down
down
down
down
down
down
down
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
20 Excellent · 79/100
Starting from
100
Cloud
−15
Transparency
−7
Seeing
−0
Moonlight
−0
Darkness
−0
Score
79
CLOUD 20% LOW 5% MID 5% HIGH 12% SUN -18.2° MOON -16.4° / 0% WIND 2 TEMP 29°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
What the GoodSeeing score actually measures

One number from 0 to 100 per hour, combining cloud, transparency, seeing, moonlight and darkness. Cloud gates everything else — no amount of steady, dark air rescues an overcast sky.

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 20:00–06:00 · 10H · MEAN 75

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

202200020406
TWILIGHT BEGINS 06:00
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 81

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

202200020406
TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 71

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

202200020406
TWILIGHT BEGINS 06:00
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 63

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

202200020406
TWILIGHT BEGINS 06:00
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 75

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

202200020406
TWILIGHT BEGINS 06:00
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The next week of nights

Tonight · 12 Aug
84
Excellent
MOON 0%
20:00–06:00
Tomorrow · 13 Aug
84
Excellent
MOON 2%
20:00–06:00
Friday · 14 Aug
34
Poor
MOON 6%
Saturday · 15 Aug
35
Fair
MOON 13%
02:00–03:00
Sunday · 16 Aug
61
Good
MOON 21%
20:00–21:00
Monday · 17 Aug
64
Good
MOON 30%
20:00–21:00
Tuesday · 18 Aug
43
Fair
MOON 39%
02:00–03:00
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Nearby locations

About this forecast

Conditions for Rahad al Bardi, Sudan 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 →