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: 7/27/2025
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 07/29/2025 07:10:08 -69.98,-111.32 128.69 07/29/2025 07:10:41 -69.97,-111.38 128.70 2.54 33
2 07/29/2025 08:00:53 69.90, 56.12 51.24 07/29/2025 08:00:08 69.87, 56.12 51.21 3.55 45
3 07/31/2025 22:36:26 70.30,-163.36 52.30 07/31/2025 22:37:38 70.20,-162.81 52.16 23.76 72
4 07/31/2025 23:27:03 -69.97, 4.48 128.05 07/31/2025 23:27:10 -69.98, 4.52 128.04 2.25 7
5 08/01/2025 00:17:47 69.83, 171.99 51.82 08/01/2025 00:16:38 69.82, 171.93 51.82 2.94 69
6 08/03/2025 14:53:16 70.03, -47.16 52.71 08/03/2025 14:54:10 70.02, -47.18 52.68 1.88 54
7 08/03/2025 15:43:57 -69.90, 120.35 127.43 08/03/2025 15:43:40 -69.91, 120.31 127.41 2.27 17
8 08/03/2025 16:34:27 69.03, -71.08 51.67 08/03/2025 16:33:20 69.08, -73.17 51.82 83.15 67
9 08/06/2025 07:10:10 69.98, 68.69 53.37 08/06/2025 07:10:39 69.98, 68.66 53.37 1.43 29
10 08/06/2025 08:00:52 -69.89,-123.86 126.71 08/06/2025 08:00:09 -69.88,-123.85 126.72 1.53 43
11 08/08/2025 22:36:25 -70.36, 16.57 125.49 08/08/2025 22:37:36 -70.26, 17.30 125.62 29.62 71
12 08/08/2025 23:27:03 69.93,-175.46 54.07 08/08/2025 23:27:07 69.93,-175.53 54.07 2.87 4
13 08/09/2025 00:17:45 -69.84, -8.01 126.02 08/09/2025 00:16:37 -69.83, -8.04 126.02 1.76 68

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/27/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250727.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/27/2025 in txt file.

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