Smeird Astro Weather
Night mission control

Friday 25 September 2026

A complete observing plan, from sunset through morning twilight.

Ten-day outlook
Possible imaging0h

No strict three-way overlap

Full darkness8h 13m

Astronomical darkness

Moon-free sky23m

Waxing gibbous · 100% lit

Clearest hour5%

At 19:00

Peak seeing8.0/10

Best atmospheric stability

Avg transparency7.0/10

Mean column clarity

Night at a glance

Observing timeline

See exactly where usable sky, full darkness and a moon-free horizon overlap.

No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing gibbous · 100% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
19:00 · 5% cloud · seeing 8.0/1022:00 · 5% cloud · seeing 8.0/1001:00 · 5% cloud · seeing 8.0/1004:00 · 33% cloud · seeing 2.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 100% illuminatedMoon below horizon
18:5619:0020:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:49
GoodMixedPoorFull darknessMoon above
Hour by hour

Condition matrix

Exact values stay visible; stronger imaging conditions are shown in green.

Local timeHourly forecast
19:0022:0001:0004:00
Imaging qualityCloud + seeing
GoodGoodGoodPoor
Total cloudLower is better
5%5%5%33%
SeeingHigher is better
8.0/108.0/108.0/102.0/10
TransparencyHigher is better
7.0/107.0/107.0/107.0/10
PickeringHigher is better
8.0/109.0/109.0/109.0/10
Low cloudLower is better
0%0%0%0%
Mid cloudLower is better
0%0%0%0%
High cloudLower is better
5%5%5%33%
DarknessTwilight stage
NauticalDarkDarkDark
MoonHorizon position
UpUpUpUp
Seeing

Atmospheric steadiness, using cloud, turbulence and low-level wind. Higher values mean sharper potential detail.

Transparency

Clarity through the full air column, influenced by atmospheric moisture. Higher values favour faint targets.

Pickering

Expected light distortion from turbulence, wind and temperature changes aloft. Higher values mean steadier stars.

Astronomy planner

Ten-day night-sky outlook

Scan cloud cover, sunset, sunrise and moon timing to find the strongest observing windows.

Forecast view
WedWednesday 16 September

Partly Cloudy

0hPossible imaging
98%Average cloud
Waxing crescent · 27%19:17 sunset · 6:34 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing crescent · 27% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
20:00 · 93% cloud · seeing 0.0/1021:00 · 100% cloud · seeing 0.0/1022:00 · 100% cloud · seeing 0.0/1023:00 · 83% cloud · seeing 0.0/1000:00 · 100% cloud · seeing 0.0/1001:00 · 100% cloud · seeing 0.0/1002:00 · 100% cloud · seeing 0.0/1003:00 · 100% cloud · seeing 0.0/1004:00 · 100% cloud · seeing 0.0/1005:00 · 100% cloud · seeing 0.0/1006:00 · 100% cloud · seeing 0.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 27% illuminatedMoon below horizon
19:1720:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:34
GoodMixedPoorFull darknessMoon above
ThuThursday 17 September

Sunny

4h 45mPossible imaging
15%Average cloud
Waxing crescent · 37%19:14 sunset · 6:36 sunrise
00:00–04:44 ideal overlap · green sky, full darkness, moon belowWaxing crescent · 37% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
20:00 · 3% cloud · seeing 8.0/1021:00 · 85% cloud · seeing 0.0/1022:00 · 0% cloud · seeing 8.0/1023:00 · 24% cloud · seeing 3.0/1000:00 · 2% cloud · seeing 8.0/1001:00 · 0% cloud · seeing 8.0/1002:00 · 0% cloud · seeing 8.0/1003:00 · 0% cloud · seeing 8.0/1004:00 · 9% cloud · seeing 8.0/1005:00 · 5% cloud · seeing 8.0/1006:00 · 43% cloud · seeing 2.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 37% illuminatedMoon below horizon
Strongest overlap starts 00:00Strongest overlap ends 04:44Best imaging windowBest
19:1420:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:36
GoodMixedPoorFull darknessMoon aboveBest window bounds
FriFriday 18 September

Partly Cloudy

0hPossible imaging
93%Average cloud
Waxing crescent · 47%19:12 sunset · 6:37 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing crescent · 47% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
20:00 · 100% cloud · seeing 0.0/1021:00 · 100% cloud · seeing 0.0/1022:00 · 100% cloud · seeing 0.0/1023:00 · 99% cloud · seeing 0.0/1000:00 · 93% cloud · seeing 0.0/1001:00 · 83% cloud · seeing 0.0/1002:00 · 90% cloud · seeing 0.0/1003:00 · 90% cloud · seeing 0.0/1004:00 · 72% cloud · seeing 1.0/1005:00 · 97% cloud · seeing 0.0/1006:00 · 99% cloud · seeing 0.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 47% illuminatedMoon below horizon
19:1220:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:37
GoodMixedPoorFull darknessMoon above
SatSaturday 19 September

Fair

0hPossible imaging
94%Average cloud
First quarter · 58%19:10 sunset · 6:39 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapFirst quarter · 58% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
20:00 · 100% cloud · seeing 0.0/1021:00 · 100% cloud · seeing 0.0/1022:00 · 100% cloud · seeing 0.0/1023:00 · 100% cloud · seeing 0.0/1000:00 · 100% cloud · seeing 0.0/1001:00 · 100% cloud · seeing 0.0/1002:00 · 100% cloud · seeing 0.0/1003:00 · 100% cloud · seeing 0.0/1004:00 · 100% cloud · seeing 0.0/1005:00 · 100% cloud · seeing 0.0/1006:00 · 5% cloud · seeing 8.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 58% illuminatedMoon below horizon
19:1020:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:39
GoodMixedPoorFull darknessMoon above
SunSunday 20 September

0hPossible imaging
96%Average cloud
First quarter · 68%19:07 sunset · 6:40 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapFirst quarter · 68% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
22:00 · 100% cloud · seeing 0.0/1001:00 · 100% cloud · seeing 0.0/1004:00 · 75% cloud · seeing 1.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 68% illuminatedMoon below horizon
19:0720:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:40
GoodMixedPoorFull darknessMoon above
MonMonday 21 September

Sunny

3h 33mPossible imaging
0%Average cloud
Waxing gibbous · 78%19:05 sunset · 6:42 sunrise
01:20–04:52 ideal overlap · green sky, full darkness, moon belowWaxing gibbous · 78% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
22:00 · 0% cloud · seeing 8.0/1001:00 · 0% cloud · seeing 8.0/1004:00 · 0% cloud · seeing 8.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 78% illuminatedMoon below horizon
Strongest overlap starts 01:20Strongest overlap ends 04:52Best imaging windowBest
19:0520:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:42
GoodMixedPoorFull darknessMoon aboveBest window bounds
TueTuesday 22 September

Sunny

2h 22mPossible imaging
0%Average cloud
Waxing gibbous · 86%19:03 sunset · 6:44 sunrise
02:33–04:54 ideal overlap · green sky, full darkness, moon belowWaxing gibbous · 86% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
22:00 · 0% cloud · seeing 8.0/1001:00 · 0% cloud · seeing 8.0/1004:00 · 0% cloud · seeing 8.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 86% illuminatedMoon below horizon
Strongest overlap starts 02:33Strongest overlap ends 04:54Best imaging windowBest
19:0320:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:44
GoodMixedPoorFull darknessMoon aboveBest window bounds
WedWednesday 23 September

Sunny

0hPossible imaging
42%Average cloud
Waxing gibbous · 92%19:00 sunset · 6:45 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing gibbous · 92% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
22:00 · 5% cloud · seeing 8.0/1001:00 · 59% cloud · seeing 1.0/1004:00 · 100% cloud · seeing 0.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 92% illuminatedMoon below horizon
19:0019:0020:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:45
GoodMixedPoorFull darknessMoon above
ThuThursday 24 September

0hPossible imaging
89%Average cloud
Waxing gibbous · 97%18:58 sunset · 6:47 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing gibbous · 97% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
19:00 · 100% cloud · seeing 0.0/1022:00 · 100% cloud · seeing 0.0/1001:00 · 63% cloud · seeing 1.0/1004:00 · 100% cloud · seeing 0.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 97% illuminatedMoon below horizon
18:5819:0020:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:47
GoodMixedPoorFull darknessMoon above
FriFriday 25 September

Sunny

0hPossible imaging
8%Average cloud
Waxing gibbous · 100%18:56 sunset · 6:49 sunrise
No ideal imaging window · green sky, full darkness and moon below do not overlapWaxing gibbous · 100% illuminated
Sky / seeingCloud and stability
DarknessTwilight levels
MoonAbove or below
19:00 · 5% cloud · seeing 8.0/1022:00 · 5% cloud · seeing 8.0/1001:00 · 5% cloud · seeing 8.0/1004:00 · 33% cloud · seeing 2.0/10
Civil twilightNautical twilightAstronomical twilightAstronomical darknessAstronomical twilightNautical twilightCivil twilight
Moon above horizon · 100% illuminatedMoon below horizon
18:5619:0020:0021:0022:0023:0000:0001:0002:0003:0004:0005:0006:0006:49
GoodMixedPoorFull darknessMoon above