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Bīna

24.172° N   78.188° E  ·  418 M
55 /100
PEAK
Worth setting up — 6 hours of workable sky from 21:30.
BEST WINDOW 21:30–03:30 · ASTRO DARK 21:30–05:30 · MOON 0%
Transparency
0.21
Seeing
1.00
Cloud
32%
Moon
0%

Good tonight

Hour by hour, local to Bīna. 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
48
45
55
50
40
41
32
11
0
BEST WINDOW
Low cloud
4%
9%
2%
7%
15%
30%
46%
64%
97%
Mid cloud
8%
6%
2%
2%
9%
11%
7%
7%
5%
High cloud
41%
43%
30%
36%
43%
6%
13%
92%
58%
Transparency
0.21
0.21
0.20
0.19
0.18
0.19
0.21
0.20
0.19
Seeing
1.00
1.00
1.00
1.00
1.00
0.98
0.96
0.99
1.00
Moon clear
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 · 48/100
Starting from
100
Cloud
−31
Transparency
−22
Seeing
−0
Moonlight
−0
Darkness
−0
Score
48
CLOUD 45% LOW 4% MID 8% HIGH 41% SUN -32.5° MOON -31.2° / 0% WIND 1 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 21:00 · OBSERVE 21:30–03:30 · 6H · MEAN 45

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

2123010305
CLOUD RETURNS 03:30
SET UP 21:00 · OBSERVE 21:30–04:30 · 7H · MEAN 55

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

2123010305
CLOUD RETURNS 04:30MOONLIGHT IGNORED FOR THIS TARGET
SET UP 21:00 · OBSERVE 21:30–01:30 · 4H · MEAN 41

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

2123010305
SET UP 23:00 · OBSERVE 23:30–00:30 · 1H · MEAN 36

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

2123010305
CLOUD BREAKS 23:30
SET UP 21:00 · OBSERVE 21:30–03:30 · 6H · MEAN 45

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

2123010305
CLOUD RETURNS 03:30
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The next week of nights

Tonight · 12 Aug
55
Good
MOON 0%
21:30–03:30
Tomorrow · 13 Aug
30
Poor
MOON 2%
Friday · 14 Aug
25
Poor
MOON 6%
Saturday · 15 Aug
3
Clouded out
MOON 13%
Sunday · 16 Aug
5
Clouded out
MOON 21%
Monday · 17 Aug
0
Clouded out
MOON 30%
Tuesday · 18 Aug
1
Clouded out
MOON 39%
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About this forecast

Conditions for Bīna, India 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 →