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Ghinnir

7.139° N   40.711° E  ·  1945 M
58 /100
PEAK
Worth setting up — 4 hours of workable sky from 00:00.
BEST WINDOW 00:00–04:00 · ASTRO DARK 21:00–05:00 · MOON 0%
Transparency
0.62
Seeing
0.92
Cloud
35%
Moon
0%

Good tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
21
22
23
00
01
02
03
04
05
06
43
16
22
58
53
43
35
18
27
0
BEST WINDOW
Low cloud
0%
2%
2%
0%
7%
4%
6%
10%
12%
1%
Mid cloud
51%
84%
78%
16%
26%
45%
58%
79%
59%
47%
High cloud
0%
0%
0%
24%
13%
6%
2%
20%
18%
25%
Transparency
0.62
0.31
0.55
0.62
0.57
0.51
0.54
0.53
0.53
0.54
Seeing
0.74
0.69
0.70
0.72
0.83
0.92
0.87
0.75
0.68
0.70
Moon clear
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
21 Fair · 43/100
Starting from
100
Cloud
−46
Transparency
−8
Seeing
−3
Moonlight
−0
Darkness
−0
Score
43
CLOUD 51% LOW 0% MID 51% HIGH 0% SUN -35.2° MOON -33.3° / 0% WIND 5 TEMP 19°
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
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

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 23:30 · OBSERVE 00:00–04:00 · 4H · MEAN 48

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

2123010305
CLOUD BREAKS 00:00CLOUD RETURNS 04:00
SET UP 23:30 · OBSERVE 00:00–04:00 · 4H · MEAN 50

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

2123010305
CLOUD BREAKS 00:00CLOUD RETURNS 04:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 23:30 · OBSERVE 00:00–04:00 · 4H · MEAN 46

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

2123010305
CLOUD BREAKS 00:00CLOUD RETURNS 04:00
SET UP 23:30 · OBSERVE 00:00–02:00 · 2H · MEAN 42

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

2123010305
CLOUD BREAKS 00:00
SET UP 23:30 · OBSERVE 00:00–03:00 · 3H · MEAN 51

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

2123010305
CLOUD BREAKS 00:00
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The next week of nights

Tonight · 12 Aug
58
Good
MOON 0%
00:00–04:00
Tomorrow · 13 Aug
66
Good
MOON 2%
01:00–06:00
Friday · 14 Aug
66
Good
MOON 6%
20:00–02:00
Saturday · 15 Aug
51
Fair
MOON 13%
03:00–04:00
Sunday · 16 Aug
85
Excellent
MOON 21%
21:00–22:00
Monday · 17 Aug
71
Good
MOON 30%
03:00–04:00
Tuesday · 18 Aug
59
Good
MOON 39%
21:00–22:00
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Nearby locations

About this forecast

Conditions for Ghinnir, Ethiopia 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 →