Reference image from SpaceWeatherLive
Thursday 18 May 2023
WL_180523_1155 UT
Halpha_180523_1141 UT
Halpha_180523_1145UT
Halpha_180523_1147 UT
Halpha_180523_1148UT
Halpha_180523_1149 UT
Halpha_180523_1150 UT
Halpha_180523_1200 UT
Halpha_180523_1204 UT