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: 7/31/2025
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 07/31/2025 22:36:26 70.29,-163.34 52.29 07/31/2025 22:37:38 70.20,-162.80 52.17 22.77 72
2 07/31/2025 23:27:03 -69.96, 4.49 128.05 07/31/2025 23:27:10 -69.98, 4.52 128.04 2.67 7
3 08/01/2025 00:17:47 69.82, 172.00 51.82 08/01/2025 00:16:38 69.82, 171.94 51.82 2.45 69
4 08/03/2025 14:53:16 70.02, -47.15 52.70 08/03/2025 14:54:10 70.02, -47.17 52.69 0.93 54
5 08/03/2025 15:43:57 -69.90, 120.36 127.43 08/03/2025 15:43:40 -69.92, 120.31 127.41 2.88 17
6 08/03/2025 16:34:27 69.02, -71.07 51.66 08/03/2025 16:33:20 69.09, -73.16 51.82 83.56 67
7 08/06/2025 07:10:10 69.97, 68.71 53.36 08/06/2025 07:10:39 69.99, 68.66 53.37 2.61 29
8 08/06/2025 08:00:52 -69.89,-123.85 126.72 08/06/2025 08:00:09 -69.88,-123.85 126.72 0.83 43
9 08/08/2025 22:36:25 -70.36, 16.58 125.49 08/08/2025 22:37:36 -70.27, 17.31 125.62 29.05 71
10 08/08/2025 23:27:04 69.97,-175.52 54.12 08/08/2025 23:27:06 69.99,-175.45 54.13 3.23 2
11 08/09/2025 00:17:45 -69.84, -8.00 126.02 08/09/2025 00:16:37 -69.83, -8.03 126.02 1.52 68
12 08/11/2025 14:53:14 -70.04, 132.84 125.04 08/11/2025 14:54:08 -70.03, 132.86 125.06 1.70 54
13 08/11/2025 15:43:58 69.93, -59.68 54.85 08/11/2025 15:43:35 69.91, -59.66 54.84 1.84 23

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/31/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250731.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/31/2025 in txt file.

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