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: 7/25/2025
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 07/26/2025 14:53:15 -70.07, 132.78 129.22 07/26/2025 14:54:11 -70.04, 132.84 129.25 3.40 56
2 07/26/2025 15:43:59 69.93, -59.71 50.65 07/26/2025 15:43:38 69.94, -59.67 50.66 1.84 21
3 07/26/2025 16:34:28 -69.17, 108.71 130.14 07/26/2025 16:33:19 -69.23, 107.00 130.01 67.89 69
4 07/29/2025 07:10:09 -69.99,-111.33 128.68 07/29/2025 07:10:41 -70.02,-111.31 128.65 3.35 32
5 07/29/2025 08:00:53 69.86, 56.18 51.20 07/29/2025 08:00:09 69.86, 56.10 51.20 2.81 44
6 07/31/2025 22:36:26 70.31,-163.38 52.31 07/31/2025 22:37:38 70.19,-162.82 52.16 25.04 72
7 07/31/2025 23:27:03 -69.97, 4.47 128.04 07/31/2025 23:27:10 -69.98, 4.51 128.04 1.78 7
8 08/01/2025 00:17:47 69.84, 171.97 51.84 08/01/2025 00:16:37 69.87, 172.00 51.86 2.61 70
9 08/03/2025 14:53:16 70.04, -47.18 52.71 08/03/2025 14:54:10 70.02, -47.18 52.68 2.67 54
10 08/03/2025 15:43:57 -69.91, 120.34 127.42 08/03/2025 15:43:40 -69.92, 120.31 127.41 1.68 17
11 08/03/2025 16:34:27 69.04, -71.09 51.68 08/03/2025 16:33:20 69.08, -73.17 51.82 82.60 67
12 08/06/2025 07:10:10 69.98, 68.69 53.37 08/06/2025 07:10:39 69.99, 68.67 53.37 1.00 29
13 08/06/2025 08:00:52 -69.90,-123.87 126.71 08/06/2025 08:00:09 -69.89,-123.84 126.71 1.28 43

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/25/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250725.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/25/2025 in txt file.

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