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: 10/5/2025
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 10/06/2025 15:43:25 -70.04, 120.39 104.69 10/06/2025 15:44:04 -70.05, 120.45 104.68 2.52 39
2 10/06/2025 16:34:08 69.88, -72.07 75.17 10/06/2025 16:33:32 69.89, -72.13 75.18 2.51 36
3 10/09/2025 07:09:46 70.78, 67.68 77.08 10/09/2025 07:10:54 70.70, 69.64 76.99 72.61 68
4 10/09/2025 08:00:15 -70.00,-123.76 103.71 10/09/2025 08:00:35 -69.99,-123.76 103.72 0.98 20
5 10/09/2025 08:50:59 69.90, 43.70 76.21 10/09/2025 08:50:02 69.88, 43.73 76.19 2.13 57
6 10/11/2025 23:26:24 70.07,-175.40 77.37 10/11/2025 23:27:36 70.05,-175.44 77.34 3.13 72
7 10/12/2025 00:17:06 -69.97, -7.93 102.73 10/12/2025 00:17:06 -69.94, -7.95 102.76 3.08 0
8 10/12/2025 01:07:47 69.71, 159.77 77.03 10/12/2025 01:06:34 69.78, 159.46 77.10 13.90 73
9 10/14/2025 15:43:15 70.05, -59.58 78.35 10/14/2025 15:44:05 70.07, -59.53 78.36 2.15 50
10 10/14/2025 16:33:57 -69.95, 107.90 101.75 10/14/2025 16:33:35 -69.96, 107.96 101.74 2.84 22
11 10/14/2025 17:24:24 68.95, -83.35 77.27 10/14/2025 17:23:18 68.96, -85.74 77.28 95.28 66
12 10/17/2025 08:00:05 69.99, 56.31 79.27 10/17/2025 08:00:35 69.99, 56.24 79.26 2.73 30
13 10/17/2025 08:50:47 -69.89,-136.22 100.82 10/17/2025 08:50:05 -69.89,-136.26 100.83 1.75 42

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/5/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251005.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 10/05/2025 in txt file.

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