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, 68.58 82.30 10/25/2025 07:11:03 70.16, 68.86 82.27 11.04 71
2 10/25/2025 08:00:32 -70.01,-123.81 97.88 10/25/2025 08:00:34 -69.99,-123.75 97.90 2.72 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 4.22 73
4 10/27/2025 23:26:51 70.03,-175.42 83.05 10/27/2025 23:27:32 70.03,-175.45 83.04 1.30 41
5 10/28/2025 00:17:32 -69.90, -7.90 97.08 10/28/2025 00:17:02 -69.92, -7.97 97.07 3.43 30
6 10/30/2025 14:53:16 -70.54, 132.23 95.58 10/30/2025 14:54:26 -70.40, 133.35 95.71 43.98 70
7 10/30/2025 15:43:52 69.99, -59.60 83.88 10/30/2025 15:43:59 69.96, -59.64 83.86 3.16 7
8 10/30/2025 16:34:34 -69.90, 107.84 96.19 10/30/2025 16:33:28 -69.91, 107.92 96.19 2.95 66
9 11/02/2025 07:10:08 -70.02,-111.22 95.24 11/02/2025 07:10:58 -70.03,-111.29 95.23 3.02 50
10 11/02/2025 08:00:53 69.95, 56.21 84.70 11/02/2025 08:00:24 69.97, 56.27 84.72 3.37 29
11 11/04/2025 22:36:36 70.61,-163.70 86.17 11/04/2025 22:37:45 70.49,-162.36 86.06 51.22 69
12 11/04/2025 23:27:08 -69.99, 4.58 94.44 11/04/2025 23:27:22 -70.01, 4.57 94.43 1.41 14
13 11/05/2025 00:17:52 69.86, 172.08 85.45 11/05/2025 00:16:49 69.89, 172.05 85.47 2.74 63

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251024.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