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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.
| April | ||||||
|---|---|---|---|---|---|---|
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
| 11
02:00 10:00 22:00 |
12
10:00 22:00 +3 charts from |
|||||
| 13
11:00 22:00 +5 charts from |
14
+7 charts from |
15
+7 charts from |
16
+7 charts from |
17
+7 charts from |
18
02:00 08:00 14:00 20:00 +7 charts from |
19
02:00 08:00 14:00 20:00 +9 charts from |
| 20
02:00 08:00 14:00 20:00 +11 charts from |
21
02:00 08:00 14:00 20:00 +13 charts from |
22
02:00 08:00 14:00 20:00 +13 charts from |
23
02:00 08:00 14:00 20:00 +13 charts from |
24
02:00 08:00 14:00 20:00 +13 charts from |
25
02:00 08:00 14:00 20:00 +13 charts from |
26
02:00 08:00 15:00 20:00 +13 charts from |
| 27
02:00 08:00 15:00 20:00 +13 charts from |
28
02:00 08:00 14:00 20:00 +13 charts from |
29
02:00 08:00 14:00 20:00 +13 charts from |
30
02:00 08:00 14:00 20:00 +13 charts from |
|||
| May | ||||||
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
| 1
04:00 09:00 10:00 14:00 20:00 +13 charts from |
2
04:00 09:00 14:00 20:00 +14 charts from |
3
02:00 08:00 14:00 20:00 +14 charts from |
||||
| 4
02:00 08:00 14:00 20:00 +14 charts from |
5
02:00 08:00 14:00 20:00 +13 charts from |
6
02:00 08:00 14:00 20:00 +13 charts from |
7
02:00 08:00 14:00 20:00 +13 charts from |
8
02:00 08:00 14:00 +13 charts from |
9
02:00 08:00 14:00 20:00 +12 charts from |
10
02:00 08:00 14:00 20:00 +12 charts from |
| 11
+12 charts from |
||||||
Instead of the last few past clear sky chart images, some people prefer long-term averages of forecasts. See the Forecast History/Climate page.
Current Oak Ridge Observatory Clear Sky Chart | Clear Sky Charts Home
Copyright © 2026 Attilla Danko. Page updated 2026-05-11 07:31:56UT on server3.