15 09 2025 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 6.00 00:15 5.67 00:30 6.00 00:45 6.00 01:00 6.00 01:15 6.00 01:30 6.00 01:45 6.00 02:00 6.00 02:15 5.67 02:30 5.67 02:45 5.67 03:00 6.00 03:15 6.00 03:30 5.67 03:45 6.00 04:00 5.67 04:15 5.67 04:30 5.67 04:45 5.67 05:00 6.00 05:15 5.33 05:30 6.00 05:45 5.33 06:00 5.33 06:15 5.00 06:30 5.33 06:45 5.00 07:00 5.00 07:15 4.33 07:30 4.33 07:45 4.33 08:00 4.33 08:15 4.00 08:30 4.00 08:45 4.33 09:00 4.33 09:15 4.00 09:30 4.00 09:45 4.00 10:00 4.00 10:15 4.00 10:30 4.33 10:45 4.33 11:00 4.00 11:15 4.00 11:30 4.00 11:45 4.33 12:00 4.00 12:15 4.00 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 4.33 14:15 4.00 14:30 4.00 14:45 3.67 15:00 4.00 15:15 3.67 15:30 3.67 15:45 3.67 16:00 3.67 16:15 4.00 16:30 4.00 16:45 3.67 17:00 3.67 17:15 4.00 17:30 4.00 17:45 4.00 18:00 4.00 18:15 4.00 18:30 4.00 18:45 4.00 19:00 4.00 19:15 4.00 19:30 3.67 19:45 3.67 20:00 3.67 20:15 4.00 20:30 3.67 20:45 3.67 21:00 3.67 21:15 3.67 21:30 3.67 21:45 4.00 22:00 4.00 22:15 4.00 22:30 4.00 22:45 4.00 23:00 4.00 23:15 4.00 23:30 4.33 23:45 4.33