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Vrede

-27.426° S   29.166° E  ·  1678 M
40 /100
PEAK
Marginal, but there is a 4 hours gap from 19:00.
BEST WINDOW 19:00–23:00 · ASTRO DARK 19:00–06:00 · MOON 0%
Transparency
0.32
Seeing
0.83
Cloud
35%
Moon
0%

Fair tonight

Hour by hour, local to Vrede. 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
07
0
40
40
40
38
23
20
29
3
7
14
14
2
0
BEST WINDOW
Low cloud
23%
32%
34%
37%
41%
64%
66%
55%
95%
90%
80%
77%
81%
93%
Mid cloud
34%
13%
6%
2%
1%
3%
5%
1%
0%
0%
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
0%
2%
39%
9%
Transparency
0.37
0.31
0.27
0.28
0.28
0.25
0.26
0.29
0.30
0.32
0.32
0.23
0.24
0.24
Seeing
0.70
0.66
0.63
0.61
0.64
0.72
0.72
0.70
0.75
0.83
0.80
0.83
0.75
0.72
Moon clear
down
down
down
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
18 Clouded out · 0/100
Starting from
100
Cloud
−47
Transparency
−14
Seeing
−3
Moonlight
−0
Darkness
−37
Score
0
CLOUD 48% LOW 23% MID 34% HIGH 0% SUN -5.0° MOON -4.8° / 0% WIND 5 TEMP 6°
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 18:30 · OBSERVE 19:00–23:00 · 4H · MEAN 42

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

18202200020406
ASTRONOMICAL DARK FROM 19:00CLOUD RETURNS 23:00
SET UP 18:30 · OBSERVE 19:00–23:00 · 4H · MEAN 43

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

18202200020406
ASTRONOMICAL DARK FROM 19:00CLOUD RETURNS 23:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 18:30 · OBSERVE 19:00–23:00 · 4H · MEAN 40

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

18202200020406
ASTRONOMICAL DARK FROM 19:00CLOUD RETURNS 23:00
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

18202200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 18:30 · OBSERVE 19:00–23:00 · 4H · MEAN 42

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

18202200020406
ASTRONOMICAL DARK FROM 19:00CLOUD RETURNS 23:00
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The next week of nights

Tonight · 12 Aug
40
Fair
MOON 0%
19:00–23:00
Tomorrow · 13 Aug
76
Excellent
MOON 2%
19:00–06:00
Friday · 14 Aug
88
Excellent
MOON 6%
19:00–06:00
Saturday · 15 Aug
96
Excellent
MOON 13%
20:00–21:00
Sunday · 16 Aug
90
Excellent
MOON 21%
20:00–21:00
Monday · 17 Aug
83
Excellent
MOON 30%
20:00–21:00
Tuesday · 18 Aug
77
Excellent
MOON 39%
20:00–21:00
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Nearby locations

About this forecast

Conditions for Vrede, South Africa 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 →