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: 9/5/2025
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 09/07/2025 07:10:01 70.04, 68.68 64.04 09/07/2025 07:10:58 70.06, 68.71 64.04 1.85 57
2 09/07/2025 08:00:43 -69.94,-123.85 116.06 09/07/2025 08:00:28 -69.94,-123.82 116.06 1.22 15
3 09/07/2025 08:51:15 69.20, 44.54 63.20 09/07/2025 08:50:06 69.23, 42.87 63.27 66.14 69
4 09/09/2025 23:26:54 70.01,-175.49 65.01 09/09/2025 23:27:28 70.03,-175.44 65.02 2.76 34
5 09/10/2025 00:17:36 -69.91, -8.01 115.09 09/10/2025 00:16:58 -69.92, -7.97 115.08 2.29 38
6 09/12/2025 14:53:14 -70.66, 131.96 113.33 09/12/2025 14:54:23 -70.52, 133.50 113.50 59.06 69
7 09/12/2025 15:43:47 69.99, -59.67 66.00 09/12/2025 15:43:58 69.97, -59.64 65.98 2.17 11
8 09/12/2025 16:34:29 -69.88, 107.81 114.10 09/12/2025 16:33:28 -69.87, 107.84 114.12 2.14 61
9 09/15/2025 07:09:56 -70.07,-111.31 112.92 09/15/2025 07:11:00 -70.05,-111.29 112.94 1.92 64
10 09/15/2025 08:00:39 69.92, 56.21 66.95 09/15/2025 08:00:27 69.94, 56.20 66.97 1.94 12
11 09/15/2025 08:51:13 -69.44,-135.76 113.53 09/15/2025 08:50:02 -69.50,-136.77 113.45 40.06 71
12 09/17/2025 23:26:47 -70.00, 4.57 111.95 09/17/2025 23:27:28 -69.98, 4.50 111.98 3.21 41
13 09/18/2025 00:17:31 69.91, 172.01 67.98 09/18/2025 00:16:54 69.92, 172.06 67.98 2.39 37

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/5/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250906.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/05/2025 in txt file.

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