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: 10/2/2025
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 10/03/2025 23:26:33 -70.05, 4.58 105.70 10/03/2025 23:27:30 -70.03, 4.56 105.73 2.76 57
2 10/04/2025 00:17:17 69.95, 172.04 74.21 10/04/2025 00:16:57 69.92, 172.05 74.18 3.16 20
3 10/04/2025 01:07:46 -69.16, -19.49 106.57 10/04/2025 01:06:37 -69.26, -21.21 106.47 68.70 69
4 10/06/2025 15:43:24 -70.00, 120.44 104.72 10/06/2025 15:43:57 -69.98, 120.39 104.75 3.04 33
5 10/06/2025 16:34:08 69.91, -72.10 75.20 10/06/2025 16:33:23 69.93, -72.04 75.22 3.50 45
6 10/09/2025 07:09:38 70.34, 68.40 76.63 10/09/2025 07:10:50 70.21, 68.98 76.50 25.97 72
7 10/09/2025 08:00:15 -69.97,-123.72 103.74 10/09/2025 08:00:22 -70.00,-123.70 103.71 2.70 7
8 10/09/2025 08:50:59 69.87, 43.74 76.18 10/09/2025 08:49:49 69.88, 43.79 76.19 2.15 70
9 10/11/2025 23:26:24 70.06,-175.37 77.35 10/11/2025 23:27:17 70.06,-175.34 77.35 1.27 53
10 10/12/2025 00:17:06 -69.95, -7.90 102.74 10/12/2025 00:16:47 -69.95, -7.86 102.75 1.54 19
11 10/12/2025 01:07:35 69.06, 160.71 76.38 10/12/2025 01:06:27 69.12, 158.66 76.44 81.43 68
12 10/14/2025 15:43:13 70.00, -59.49 78.29 10/14/2025 15:43:40 70.01, -59.50 78.30 1.44 27
13 10/14/2025 16:33:55 -69.89, 107.98 101.80 10/14/2025 16:33:10 -69.91, 107.99 101.79 1.45 45

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/2/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251002.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 10/02/2025 in txt file.

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