Phenomena of the galilean satellites
Times are given in daylight time for TGCO-LASO (75° 40' 41" W, 41° 35' 41" N).

Date        Hour    #    Satellite   Phenomenon                     Elevation of  Elevetion of
yyyy mm dd  hh:mm                                                   Jupiter (°)   the Sun (°)

2021 04 01  06:39   III  Ganymede    Transit of shadow begins       16.5          -2.0
2021 04 02  05:35   I    Io          Transit ends                   6.8           -13.3
2021 04 09  05:16   I    Io          Transit begins                 7.6           -14.5
2021 04 09  06:28   I    Io          Transit of shadow ends         18.9          -1.7
2021 04 10  04:56   I    Io          Occultation ends               4.8           -17.5
2021 04 12  05:19   III  Ganymede    Occultation begins             9.9           -12.9
2021 04 13  05:02   II   Europa      Transit of shadow ends         7.6           -15.5
2021 04 16  06:04   I    Io          Transit of shadow begins       19.1          -3.9
2021 04 19  04:45   III  Ganymede    Eclipse begins                 8.3           -16.5
2021 04 20  04:43   II   Europa      Transit of shadow begins       8.6           -16.4
2021 04 22  04:14   II   Europa      Occultation ends               4.8           -20.3
2021 04 24  05:19   I    Io          Eclipse begins                 16.6          -9.6
2021 04 25  04:44   I    Io          Transit of shadow ends         11.7          -14.9
2021 04 25  05:59   I    Io          Transit ends                   22.9          -2.4
2021 04 30  03:53   III  Ganymede    Transit begins                 6.1           -20.9