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Mémót

11.829° N   106.182° E  ·  74 M
75 /100
PEAK
A genuinely good night — 5 hours of clear, dark sky from 00:00.
BEST WINDOW 00:00–05:00 · ASTRO DARK 00:00–05:00 · MOON 0%
Transparency
0.40
Seeing
1.00
Cloud
1%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
00
01
02
03
04
05
06
71
68
68
75
73
32
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
2%
2%
4%
High cloud
4%
15%
16%
0%
2%
0%
0%
Transparency
0.35
0.37
0.38
0.40
0.40
0.39
0.37
Seeing
0.94
0.94
0.95
0.97
0.98
1.00
1.00
Moon clear
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
00 Good · 71/100
Starting from
100
Cloud
−2
Transparency
−26
Seeing
−1
Moonlight
−0
Darkness
−0
Score
71
CLOUD 4% LOW 0% MID 0% HIGH 4% SUN -63.2° MOON -62.2° / 0% WIND 3 TEMP 26°
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 23:30 · OBSERVE 00:00–05:00 · 5H · MEAN 71

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

00020406
TWILIGHT BEGINS 05:00
SET UP 23:30 · OBSERVE 00:00–06:00 · 6H · MEAN 81

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

00020406
TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 23:30 · OBSERVE 00:00–05:00 · 5H · MEAN 66

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

00020406
TWILIGHT BEGINS 05:00
SET UP 23:30 · OBSERVE 00:00–05:00 · 5H · MEAN 57

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

00020406
TWILIGHT BEGINS 05:00
SET UP 23:30 · OBSERVE 00:00–05:00 · 5H · MEAN 74

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

00020406
TWILIGHT BEGINS 05:00
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The next week of nights

Tonight · 12 Aug
75
Excellent
MOON 0%
00:00–05:00
Tomorrow · 13 Aug
47
Fair
MOON 1%
21:00–01:00
Friday · 14 Aug
32
Poor
MOON 5%
Saturday · 15 Aug
27
Poor
MOON 10%
Sunday · 16 Aug
29
Poor
MOON 19%
Monday · 17 Aug
10
Clouded out
MOON 28%
Tuesday · 18 Aug
3
Clouded out
MOON 37%
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About this forecast

Conditions for Mémót, Cambodia 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 →