Archived Clear Sky Chart Images
for Goat Mountain Astronomical Research Station, (CA)

A Sponsored Feature

Each day lists the local time, hh:mm in 24h time, that is the starting hour of a past clear sky chart. Each clear sky chart forecasts a few days into the future. There are at least two clear sky chart updates per day. So there are multiple overlapping forecasts for each day.

February
Mon	Tue	Wed	Thu	Fri	Sat	Sun
9 01:00 09:00	10 01:00 09:00 +2 charts from previous days	11 01:00 09:00 +4 charts from previous days	12 01:00 09:00 +6 charts from previous days	13 01:00 09:00 21:00 +8 charts from previous days	14 09:00 +11 charts from previous days	15 02:00 09:00 +12 charts from previous days
16 03:00 09:00 +14 charts from previous days	17 01:00 09:00 20:00 +14 charts from previous days	18 09:00 20:00 +15 charts from previous days	19 09:00 21:00 +15 charts from previous days	20 09:00 21:00 +15 charts from previous days	21 09:00 21:00 +15 charts from previous days	22 09:00 +15 charts from previous days
23 01:00 09:00 +14 charts from previous days	24 01:00 09:00 +14 charts from previous days	25 01:00 09:00 20:00 +14 charts from previous days	26 09:00 21:00 +15 charts from previous days	27 09:00 +15 charts from previous days	28 01:00 09:00 +14 charts from previous days
March
Mon	Tue	Wed	Thu	Fri	Sat	Sun
						1 01:00 09:00 +14 charts from previous days
2 01:00 09:00 21:00 +14 charts from previous days	3 21:00 +15 charts from previous days	4 01:00 09:00 21:00 +14 charts from previous days	5 09:00 +15 charts from previous days	6 01:00 09:00 +14 charts from previous days	7 01:00 09:00 +14 charts from previous days	8 01:00 10:00 +14 charts from previous days
9 05:00 10:00 +14 charts from previous days	10 02:00 10:00 22:00 +14 charts from previous days	11 +15 charts from previous days

Instead of the last few past clear sky chart images, some people prefer long-term averages of forecasts. See the Forecast History/Climate page.