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: 9/3/2025
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 09/04/2025 14:53:13 70.34, -47.56 63.35 09/04/2025 14:54:24 70.27, -46.86 63.26 27.41 71
2 09/04/2025 15:43:50 -69.98, 120.32 117.01 09/04/2025 15:43:57 -69.99, 120.37 117.01 2.38 7
3 09/04/2025 16:34:33 69.82, -72.14 62.84 09/04/2025 16:33:25 69.83, -72.20 62.86 2.89 68
4 09/07/2025 07:10:01 70.05, 68.68 64.04 09/07/2025 07:10:58 70.04, 68.69 64.02 0.77 57
5 09/07/2025 08:00:43 -69.94,-123.85 116.06 09/07/2025 08:00:28 -69.93,-123.83 116.08 1.67 15
6 09/07/2025 08:51:14 69.15, 44.61 63.14 09/07/2025 08:50:06 69.22, 42.85 63.25 70.29 68
7 09/09/2025 23:26:54 70.02,-175.50 65.02 09/09/2025 23:27:27 70.04,-175.43 65.03 3.49 33
8 09/10/2025 00:17:35 -69.86, -7.94 115.14 09/10/2025 00:16:58 -69.88, -8.02 115.12 3.37 37
9 09/12/2025 14:53:12 -70.57, 132.11 113.42 09/12/2025 14:54:22 -70.49, 133.47 113.53 51.37 70
10 09/12/2025 15:43:46 69.96, -59.62 65.97 09/12/2025 15:43:57 69.94, -59.68 65.95 2.72 11
11 09/12/2025 16:34:28 -69.85, 107.86 114.14 09/12/2025 16:33:27 -69.84, 107.81 114.15 2.34 61
12 09/15/2025 07:09:54 -70.04,-111.28 112.94 09/15/2025 07:10:57 -70.03,-111.32 112.96 2.50 63
13 09/15/2025 08:00:37 69.90, 56.24 66.93 09/15/2025 08:00:24 69.91, 56.17 66.94 2.94 13
14 09/15/2025 08:51:11 -69.37,-135.65 113.61 09/15/2025 08:50:01 -69.42,-136.87 113.53 47.95 70

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/3/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250903.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/03/2025 in txt file.

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