X-Class Solar Flares of 2012: X1.7 at 18:37 UTC Jan. 27 Region 1402 All X-Class Solar Flares of 2011: X1.9 at 20:27 UTC November 3 - 1339 X1.9 at 09:40 UTC September 24 - 1302 X1.4 at 11:01 UTC September 22 - 1302 X1.8 at 22:38 UTC September 7 - 1283 X2.1 at 22:20 UTC September 6 - 1283 X6.9 at 08:05 UTC August 9 - 1263 X1.5 at 23:23 UTC March 9 - 1166 X2.2 at 01:56 UTC February 15 - 1158 X-class flare2007 - 2010 count: 0 (None during/near Solar minimum)
All X-Class Solar Flares of 2006:
X3.4 at 02:40 UTC December 13 - 930
X6.5 at 18:47 UTC December 6 - 930
X9.0 at 10:35 UTC December 5 - 930 The largest X-Class Flares of 2005:
X6.2 at 20:04 UTC September 9 - 808
X17.1 - 17:40 UTC September 7 - 808
