Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/20/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 09/21/2025 23:01:31 70.41,-169.71 70.01 09/21/2025 23:02:42 70.26,-168.96 69.84 32.88 71
2 09/21/2025 23:52:07 -69.99, -1.74 110.41 09/21/2025 23:52:15 -69.98, -1.72 110.42 1.09 8
3 09/22/2025 00:42:51 69.89, 165.72 69.51 09/22/2025 00:41:42 69.88, 165.78 69.49 2.79 69
4 09/24/2025 15:18:16 70.04, -53.35 70.67 09/24/2025 15:19:15 70.03, -53.41 70.65 2.85 59
5 09/24/2025 16:08:58 -69.93, 114.13 109.43 09/24/2025 16:08:45 -69.92, 114.07 109.45 2.98 13
6 09/24/2025 16:59:31 69.25, -77.56 69.90 09/24/2025 16:58:22 69.26, -79.18 69.92 63.56 69
7 09/27/2025 07:35:09 70.04, 62.43 71.71 09/27/2025 07:35:44 70.05, 62.50 71.71 2.64 35
8 09/27/2025 08:25:51 -69.93,-130.08 108.39 09/27/2025 08:25:14 -69.94,-130.02 108.38 2.71 37
9 09/29/2025 23:01:29 -70.72, 9.84 106.58 09/29/2025 23:02:38 -70.60, 11.54 106.72 63.94 69
10 09/29/2025 23:52:01 70.00, 178.29 72.71 09/29/2025 23:52:14 69.99, 178.31 72.70 1.00 13
11 09/30/2025 00:42:43 -69.89, -14.23 107.40 09/30/2025 00:41:44 -69.89, -14.21 107.39 0.96 59
12 10/02/2025 15:18:10 -70.10, 126.61 106.17 10/02/2025 15:19:16 -70.09, 126.68 106.19 3.06 66
13 10/02/2025 16:08:53 69.96, -65.87 73.71 10/02/2025 16:08:43 69.98, -65.83 73.72 2.17 10
14 10/02/2025 16:59:30 -69.58, 102.01 106.67 10/02/2025 16:58:18 -69.60, 101.28 106.65 28.44 72

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_NOAA-20_LANDSAT-8_20250920.jpg

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-8