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: 7/21/2025
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 07/22/2025 14:28:08 -70.88, 137.83 129.21 07/22/2025 14:29:15 -70.76, 140.06 129.43 82.63 67
2 07/22/2025 15:18:38 70.01, -53.48 49.87 07/22/2025 15:18:54 70.00, -53.41 49.86 2.76 16
3 07/22/2025 16:09:19 -69.89, 114.02 130.25 07/22/2025 16:08:24 -69.89, 114.07 130.24 1.95 55
4 07/25/2025 06:44:47 -70.06,-105.10 129.52 07/25/2025 06:45:57 -70.04,-105.12 129.55 2.77 70
5 07/25/2025 07:35:31 69.93, 62.41 50.35 07/25/2025 07:35:24 69.93, 62.37 50.36 1.53 7
6 07/25/2025 08:26:09 -69.64,-129.85 129.94 07/25/2025 08:24:56 -69.71,-130.30 129.84 18.84 73
7 07/27/2025 23:01:42 -70.04, 10.71 128.94 07/27/2025 23:02:27 -70.01, 10.72 128.98 2.77 45
8 07/27/2025 23:52:26 69.91, 178.22 50.93 07/27/2025 23:51:54 69.90, 178.21 50.93 0.55 32
9 07/30/2025 14:28:08 70.78, -42.01 52.48 07/30/2025 14:29:16 70.68, -40.06 52.29 72.71 68
10 07/30/2025 15:18:36 -69.96, 126.60 128.38 07/30/2025 15:18:57 -69.97, 126.55 128.38 2.08 21
11 07/30/2025 16:09:20 69.84, -65.90 51.49 07/30/2025 16:08:24 69.86, -65.97 51.53 3.34 56
12 08/02/2025 06:44:50 70.08, 74.87 52.41 08/02/2025 06:45:56 70.07, 74.94 52.38 2.91 66
13 08/02/2025 07:35:31 -69.94,-117.60 127.73 08/02/2025 07:35:26 -69.97,-117.57 127.71 3.13 5
14 08/02/2025 08:26:09 69.50, 50.36 51.82 08/02/2025 08:24:58 69.58, 49.54 51.93 32.98 71

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/21/2025
SNOs_Map_NOAA-20_LANDSAT-8_20250721.jpg

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 07/21/2025 in txt file.

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