19 04 2021 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 4.00 00:15 4.00 00:30 4.00 00:45 4.00 01:00 4.00 01:15 4.00 01:30 4.00 01:45 4.33 02:00 4.33 02:15 4.33 02:30 4.33 02:45 4.33 03:00 4.33 03:15 4.33 03:30 4.33 03:45 4.33 04:00 4.33 04:15 4.33 04:30 4.33 04:45 4.33 05:00 4.33 05:15 4.33 05:30 4.00 05:45 4.00 06:00 4.33 06:15 4.33 06:30 4.00 06:45 4.00 07:00 4.00 07:15 4.00 07:30 4.00 07:45 4.00 08:00 4.00 08:15 4.00 08:30 4.33 08:45 4.33 09:00 4.33 09:15 4.33 09:30 4.33 09:45 4.00 10:00 4.33 10:15 4.00 10:30 4.00 10:45 4.33 11:00 4.00 11:15 4.33 11:30 4.33 11:45 4.33 12:00 4.33 12:15 4.67 12:30 4.33 12:45 4.33 13:00 4.33 13:15 4.33 13:30 4.33 13:45 4.33 14:00 -1.00 14:15 -1.00 14:30 -1.00 14:45 4.00 15:00 4.00 15:15 4.00 15:30 4.00 15:45 3.67 16:00 3.67 16:15 3.67 16:30 3.67 16:45 4.00 17:00 4.33 17:15 4.33 17:30 4.33 17:45 4.33 18:00 4.00 18:15 4.00 18:30 4.00 18:45 4.00 19:00 4.67 19:15 3.67 19:30 3.67 19:45 3.67 20:00 4.00 20:15 3.67 20:30 4.00 20:45 -1.00 21:00 -1.00 21:15 4.33 21:30 4.67 21:45 4.67 22:00 4.00 22:15 4.33 22:30 4.33 22:45 4.67 23:00 4.33 23:15 4.33 23:30 4.33 23:45 4.33