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: 9/12/2025
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 09/15/2025 07:09:55 -70.04,-111.27 112.95 09/15/2025 07:11:01 -70.02,-111.34 112.97 3.30 66
2 09/15/2025 08:00:39 69.94, 56.19 66.97 09/15/2025 08:00:28 69.92, 56.16 66.95 2.40 11
3 09/15/2025 08:51:14 -69.46,-135.79 113.51 09/15/2025 08:50:03 -69.53,-136.74 113.42 37.62 71
4 09/17/2025 23:26:48 -70.02, 4.54 111.94 09/17/2025 23:27:30 -70.01, 4.53 111.95 0.85 42
5 09/18/2025 00:17:32 69.92, 172.00 67.98 09/18/2025 00:16:57 69.91, 172.03 67.97 2.07 35
6 09/20/2025 14:53:11 70.74, -48.14 69.84 09/20/2025 14:54:19 70.64, -46.30 69.70 68.72 68
7 09/20/2025 15:43:41 -70.00, 120.35 110.92 09/20/2025 15:43:59 -69.99, 120.38 110.94 1.94 18
8 09/20/2025 16:34:24 69.86, -72.12 68.95 09/20/2025 16:33:26 69.88, -72.13 68.97 2.30 58
9 09/23/2025 07:09:50 70.05, 68.74 70.16 09/23/2025 07:10:57 70.05, 68.72 70.16 0.67 67
10 09/23/2025 08:00:32 -69.94,-123.77 109.94 09/23/2025 08:00:27 -69.95,-123.79 109.94 1.20 5
11 09/23/2025 08:51:10 69.53, 44.14 69.66 09/23/2025 08:49:58 69.61, 43.39 69.75 30.43 72
12 09/25/2025 23:26:43 70.05,-175.47 71.20 09/25/2025 23:27:25 70.05,-175.39 71.19 2.98 42
13 09/26/2025 00:17:25 -69.93, -7.98 108.91 09/26/2025 00:16:55 -69.94, -7.91 108.90 2.98 30

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/12/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250913.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 09/12/2025 in txt file.

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