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: 9/8/2025
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 09/09/2025 23:26:54 70.02,-175.50 65.02 09/09/2025 23:27:28 70.03,-175.45 65.02 2.18 34
2 09/10/2025 00:17:36 -69.92, -8.03 115.08 09/10/2025 00:16:58 -69.91, -7.98 115.08 2.23 38
3 09/12/2025 14:53:14 -70.67, 131.95 113.32 09/12/2025 14:54:23 -70.53, 133.51 113.49 59.98 69
4 09/12/2025 15:43:47 70.00, -59.68 66.01 09/12/2025 15:43:58 69.99, -59.63 65.99 2.48 11
5 09/12/2025 16:34:29 -69.89, 107.79 114.09 09/12/2025 16:33:28 -69.87, 107.85 114.11 2.85 61
6 09/15/2025 07:09:56 -70.07,-111.32 112.91 09/15/2025 07:11:00 -70.08,-111.26 112.91 2.69 64
7 09/15/2025 08:00:39 69.93, 56.21 66.96 09/15/2025 08:00:28 69.92, 56.16 66.95 2.10 11
8 09/15/2025 08:51:14 -69.45,-135.77 113.53 09/15/2025 08:50:03 -69.53,-136.73 113.42 38.82 71
9 09/17/2025 23:26:47 -70.00, 4.57 111.95 09/17/2025 23:27:29 -69.99, 4.50 111.97 2.89 42
10 09/18/2025 00:17:31 69.91, 172.01 67.97 09/18/2025 00:16:55 69.93, 172.07 67.99 3.05 36
11 09/20/2025 14:53:09 70.69, -48.05 69.78 09/20/2025 14:54:18 70.58, -46.38 69.64 62.61 69
12 09/20/2025 15:43:40 -69.99, 120.36 110.93 09/20/2025 15:43:57 -69.98, 120.38 110.94 1.49 17
13 09/20/2025 16:34:23 69.85, -72.12 68.95 09/20/2025 16:33:24 69.87, -72.13 68.96 1.56 59

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/8/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250908.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/08/2025 in txt file.

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