31 08 2017 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 1.33 00:15 1.33 00:30 1.33 00:45 1.33 01:00 1.67 01:15 1.67 01:30 1.67 01:45 1.67 02:00 1.67 02:15 1.67 02:30 1.67 02:45 2.00 03:00 2.00 03:15 2.00 03:30 1.67 03:45 2.00 04:00 2.00 04:15 2.00 04:30 2.33 04:45 3.67 05:00 3.67 05:15 4.00 05:30 3.33 05:45 2.33 06:00 2.67 06:15 3.67 06:30 3.33 06:45 3.67 07:00 4.67 07:15 5.00 07:30 5.33 07:45 5.33 08:00 5.67 08:15 5.67 08:30 5.67 08:45 5.67 09:00 5.67 09:15 5.67 09:30 5.33 09:45 5.33 10:00 5.33 10:15 5.33 10:30 6.00 10:45 6.00 11:00 6.00 11:15 5.67 11:30 6.00 11:45 5.67 12:00 6.33 12:15 6.67 12:30 6.00 12:45 5.67 13:00 5.67 13:15 6.00 13:30 5.67 13:45 5.67 14:00 5.67 14:15 5.33 14:30 5.67 14:45 5.67 15:00 5.33 15:15 5.67 15:30 5.67 15:45 5.33 16:00 5.33 16:15 5.33 16:30 5.00 16:45 5.00 17:00 5.33 17:15 5.33 17:30 5.33 17:45 5.67 18:00 5.33 18:15 4.67 18:30 4.67 18:45 4.67 19:00 4.67 19:15 4.33 19:30 4.33 19:45 4.67 20:00 4.67 20:15 5.00 20:30 4.33 20:45 4.00 21:00 4.00 21:15 4.33 21:30 4.33 21:45 4.67 22:00 4.67 22:15 4.67 22:30 4.33 22:45 4.33 23:00 4.67 23:15 5.00 23:30 5.00 23:45 4.67