Solar flares — Apr 21, 2000
The strongest solar flare in the day
Flare of C4.8 level (normal) — in 18:58
Solar activity index
Value for Apr 21, 2000 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from Apr 20, 2000 to Apr 21, 2000
Time zone — UTC+01 (London) - summer time

This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2000
Total number of flares of class C and higher — 12 flares
C type — 12 | M type — 0 | X type — 0
start | maximum | end | region | |
---|---|---|---|---|
C1.8
|
23:32 | 23:36 | 23:53 | 8955 |
C1.9
|
22:42 | 22:47 | 23:06 | 8967 |
C1.2
|
21:32 | 21:35 | 21:41 | 8963 |
C1.8
|
20:10 | 20:25 | 20:36 | 8963 |
C4.8
|
18:53 | 18:58 | 19:06 | — |
C1.4
|
16:19 | 16:23 | 16:26 | 8963 |
C1.2
|
16:07 | 16:09 | 16:11 | 8963 |
C1.7
|
10:23 | 10:28 | 10:34 | 8963 |
C1.7
|
06:15 | 06:29 | 06:44 | 8955 |
C1.3
|
04:23 | 04:27 | 04:34 | — |
C1.3
|
03:34 | 03:37 | 03:47 | — |
C2.3
|
01:54 | 01:59 | 02:02 | 8963 |