Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/23/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 10/25/2025 07:09:52 70.20, 68.57 82.30 10/25/2025 07:11:03 70.16, 68.85 82.27 11.33 71
2 10/25/2025 08:00:32 -70.01,-123.82 97.88 10/25/2025 08:00:34 -69.99,-123.75 97.90 2.97 2
3 10/25/2025 08:51:15 69.82, 43.77 81.95 10/25/2025 08:50:02 69.83, 43.67 81.96 3.97 73
4 10/27/2025 23:26:51 70.04,-175.43 83.05 10/27/2025 23:27:32 70.03,-175.44 83.04 1.17 41
5 10/28/2025 00:17:32 -69.90, -7.90 97.08 10/28/2025 00:17:02 -69.92, -7.96 97.06 3.23 30
6 10/30/2025 14:53:16 -70.54, 132.23 95.58 10/30/2025 14:54:26 -70.41, 133.36 95.71 44.31 70
7 10/30/2025 15:43:52 69.99, -59.61 83.89 10/30/2025 15:43:59 69.97, -59.63 83.86 2.54 7
8 10/30/2025 16:34:33 -69.85, 107.92 96.24 10/30/2025 16:33:29 -69.86, 107.85 96.24 2.87 64
9 11/02/2025 07:10:08 -70.03,-111.22 95.23 11/02/2025 07:10:58 -70.04,-111.27 95.22 2.85 50
10 11/02/2025 08:00:53 69.95, 56.20 84.71 11/02/2025 08:00:25 69.93, 56.21 84.68 2.54 28
11 11/02/2025 08:51:17 -68.91,-134.98 96.32 11/02/2025 08:50:11 -68.94,-137.48 96.30 99.75 66
12 11/04/2025 22:36:36 70.61,-163.70 86.17 11/04/2025 22:37:45 70.51,-162.33 86.08 52.05 69
13 11/04/2025 23:27:08 -70.00, 4.58 94.44 11/04/2025 23:27:22 -70.03, 4.60 94.41 3.39 14
14 11/05/2025 00:17:53 69.92, 172.00 85.50 11/05/2025 00:16:49 69.91, 172.08 85.49 3.42 64

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251023.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 10/23/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-9