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Biswanath Chariali

26.726° N   93.147° E  ·  86 M
56 /100
PEAK
Worth setting up — 6 hours of workable sky from 22:30.
BEST WINDOW 22:30–04:30 · ASTRO DARK 22:30–03:30 · MOON 0%
Transparency
0.34
Seeing
1.00
Cloud
27%
Moon
0%

Good tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
22
23
00
01
02
03
04
56
47
47
43
50
56
0
BEST WINDOW
Low cloud
1%
1%
0%
6%
3%
0%
1%
Mid cloud
2%
15%
9%
2%
3%
5%
6%
High cloud
38%
41%
49%
66%
51%
23%
9%
Transparency
0.32
0.28
0.26
0.29
0.34
0.34
0.29
Seeing
1.00
1.00
1.00
1.00
1.00
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
22 Good · 56/100
Starting from
100
Cloud
−23
Transparency
−21
Seeing
−0
Moonlight
−0
Darkness
−0
Score
56
CLOUD 40% LOW 1% MID 2% HIGH 38% SUN -46.4° MOON -45.1° / 0% WIND 1 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 22:00 · OBSERVE 22:30–04:30 · 6H · MEAN 48

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

22000204
TWILIGHT BEGINS 04:30
SET UP 22:00 · OBSERVE 22:30–04:30 · 6H · MEAN 60

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

22000204
TWILIGHT BEGINS 04:30MOONLIGHT IGNORED FOR THIS TARGET
SET UP 22:00 · OBSERVE 22:30–01:30 · 3H · MEAN 41

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

22000204
SET UP 03:00 · OBSERVE 03:30–04:30 · 1H · MEAN 39

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

22000204
HIGH CLOUD CLEARS 03:30TWILIGHT BEGINS 04:30
SET UP 22:00 · OBSERVE 22:30–04:30 · 6H · MEAN 47

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

22000204
TWILIGHT BEGINS 04:30
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The next week of nights

Tonight · 12 Aug
56
Good
MOON 0%
22:30–04:30
Tomorrow · 13 Aug
46
Fair
MOON 2%
19:30–23:30
Friday · 14 Aug
35
Fair
MOON 6%
19:30–21:30
Saturday · 15 Aug
0
Clouded out
MOON 13%
Sunday · 16 Aug
5
Clouded out
MOON 21%
Monday · 17 Aug
4
Clouded out
MOON 30%
Tuesday · 18 Aug
24
Poor
MOON 39%
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About this forecast

Conditions for Biswanath Chariali, 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 →