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: 7/28/2025
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 07:10:09 -70.00,-111.34 128.67 07/29/2025 07:10:41 -70.01,-111.32 128.66 2.03 32
2 07/29/2025 08:00:54 69.91, 56.10 51.25 07/29/2025 08:00:08 69.91, 56.17 51.25 2.95 46
3 07/31/2025 22:36:26 70.32,-163.38 52.32 07/31/2025 22:37:37 70.24,-162.75 52.20 25.11 71
4 07/31/2025 23:27:03 -69.98, 4.46 128.03 07/31/2025 23:27:10 -69.97, 4.50 128.05 1.92 7
5 08/01/2025 00:17:47 69.85, 171.97 51.84 08/01/2025 00:16:37 69.86, 171.99 51.86 1.38 70
6 08/03/2025 14:53:16 70.05, -47.18 52.72 08/03/2025 14:54:09 70.06, -47.12 52.72 2.73 53
7 08/03/2025 15:43:57 -69.92, 120.33 127.41 08/03/2025 15:43:40 -69.90, 120.29 127.43 2.39 17
8 08/03/2025 16:34:27 69.04, -71.10 51.69 08/03/2025 16:33:20 69.07, -73.19 51.80 83.00 67
9 08/06/2025 07:10:10 69.99, 68.67 53.38 08/06/2025 07:10:39 69.97, 68.64 53.36 2.80 29
10 08/06/2025 08:00:51 -69.86,-123.80 126.75 08/06/2025 08:00:09 -69.87,-123.87 126.73 2.86 42
11 08/08/2025 22:36:26 -70.37, 16.55 125.47 08/08/2025 22:37:37 -70.25, 17.29 125.64 30.86 71
12 08/08/2025 23:27:04 69.94,-175.48 54.08 08/08/2025 23:27:07 69.97,-175.47 54.11 3.18 3
13 08/09/2025 00:17:46 -69.85, -8.03 126.00 08/09/2025 00:16:37 -69.87, -7.98 125.98 2.72 69

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/28/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250728.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/28/2025 in txt file.

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