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Tufānganj

26.317° N   89.665° E  ·  41 M
48 /100
PEAK
Marginal, but there is a 3 hours gap from 01:30.
BEST WINDOW 01:30–04:30 · ASTRO DARK 21:30–04:30 · MOON 0%
Transparency
0.27
Seeing
1.00
Cloud
40%
Moon
0%

Fair tonight

Hour by hour, local to Tufānganj. 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
34
27
26
33
38
44
48
6
0
BEST WINDOW
Low cloud
0%
1%
6%
13%
8%
7%
12%
11%
9%
Mid cloud
12%
25%
14%
27%
6%
3%
4%
0%
0%
High cloud
85%
89%
98%
50%
66%
53%
32%
52%
26%
Transparency
0.27
0.25
0.24
0.23
0.21
0.22
0.22
0.23
0.24
Seeing
0.99
0.99
0.98
0.96
0.98
1.00
1.00
1.00
0.94
Moon clear
down
down
down
down
down
down
down
down
0%
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 Poor · 34/100
Starting from
100
Cloud
−52
Transparency
−14
Seeing
−0
Moonlight
−0
Darkness
−0
Score
34
CLOUD 87% LOW 0% MID 12% HIGH 85% SUN -38.5° MOON -37.1° / 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.

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 01:00 · OBSERVE 01:30–04:30 · 3H · MEAN 42

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

2123010305
CLOUD RETURNS 04:30
SET UP 00:00 · OBSERVE 00:30–04:30 · 4H · MEAN 49

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

2123010305
HIGH CLOUD CLEARS 00:30CLOUD RETURNS 04:30MOONLIGHT IGNORED FOR THIS TARGET
SET UP 03:00 · OBSERVE 03:30–04:30 · 1H · MEAN 41

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

2123010305
HIGH CLOUD CLEARS 03:30CLOUD RETURNS 04:30
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 02:00 · OBSERVE 02:30–04:30 · 2H · MEAN 44

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

2123010305
CLOUD RETURNS 04:30
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The next week of nights

Tonight · 12 Aug
48
Fair
MOON 0%
01:30–04:30
Tomorrow · 13 Aug
38
Fair
MOON 2%
20:30–21:30
Friday · 14 Aug
43
Fair
MOON 6%
02:30–04:30
Saturday · 15 Aug
11
Clouded out
MOON 13%
Sunday · 16 Aug
19
Poor
MOON 21%
Monday · 17 Aug
0
Clouded out
MOON 30%
Tuesday · 18 Aug
7
Clouded out
MOON 39%
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About this forecast

Conditions for Tufānganj, 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 →