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Ijevan

40.880° N   45.148° E  ·  755 M
61 /100
PEAK
Worth setting up — 3 hours of workable sky from 22:00.
BEST WINDOW 22:00–01:00 · ASTRO DARK 22:00–05:00 · MOON 0%
Transparency
0.31
Seeing
1.00
Cloud
16%
Moon
0%

Good tonight

Hour by hour, local to Ijevan. 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
06
20
61
53
46
8
6
2
26
19
0
BEST WINDOW
Low cloud
20%
15%
24%
28%
70%
74%
84%
46%
40%
80%
Mid cloud
2%
0%
1%
9%
2%
2%
2%
2%
3%
6%
High cloud
6%
2%
1%
0%
1%
0%
0%
0%
0%
0%
Transparency
0.27
0.31
0.29
0.27
0.21
0.17
0.16
0.17
0.18
0.19
Seeing
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
Moon clear
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
21 Poor · 20/100
Starting from
100
Cloud
−24
Transparency
−22
Seeing
−0
Moonlight
−0
Darkness
−33
Score
20
CLOUD 26% LOW 20% MID 2% HIGH 6% SUN -10.5° MOON -9.1° / 0% WIND 1 TEMP 21°
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 21:30 · OBSERVE 22:00–01:00 · 3H · MEAN 53

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

2123010305
ASTRONOMICAL DARK FROM 22:00CLOUD RETURNS 01:00
SET UP 20:30 · OBSERVE 21:00–01:00 · 4H · MEAN 62

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

2123010305
CLOUD RETURNS 01:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 21:30 · OBSERVE 22:00–01:00 · 3H · MEAN 50

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

2123010305
ASTRONOMICAL DARK FROM 22:00CLOUD RETURNS 01:00
SET UP 21:30 · OBSERVE 22:00–00:00 · 2H · MEAN 43

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

2123010305
ASTRONOMICAL DARK FROM 22:00
SET UP 21:30 · OBSERVE 22:00–01:00 · 3H · MEAN 54

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

2123010305
ASTRONOMICAL DARK FROM 22:00CLOUD RETURNS 01:00
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The next week of nights

Tonight · 12 Aug
61
Good
MOON 0%
22:00–01:00
Tomorrow · 13 Aug
61
Good
MOON 2%
00:00–02:00
Friday · 14 Aug
56
Good
MOON 6%
23:00–01:00
Saturday · 15 Aug
0
Clouded out
MOON 13%
Sunday · 16 Aug
0
Clouded out
MOON 21%
Monday · 17 Aug
52
Fair
MOON 30%
22:00–23:00
Tuesday · 18 Aug
70
Good
MOON 39%
22:00–23:00
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Nearby locations

About this forecast

Conditions for Ijevan, Armenia 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 →