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: 10/13/2025
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 10/14/2025 15:43:15 70.06, -59.59 78.35 10/14/2025 15:44:06 70.05, -59.56 78.34 1.36 51
2 10/14/2025 16:33:56 -69.91, 107.95 101.79 10/14/2025 16:33:36 -69.94, 107.91 101.76 3.06 20
3 10/14/2025 17:24:24 68.95, -83.36 77.27 10/14/2025 17:23:18 69.00, -85.69 77.32 93.32 66
4 10/17/2025 08:00:05 69.99, 56.31 79.27 10/17/2025 08:00:36 70.01, 56.27 79.29 2.82 31
5 10/17/2025 08:50:47 -69.90,-136.23 100.81 10/17/2025 08:50:06 -69.90,-136.25 100.81 0.92 41
6 10/19/2025 23:26:21 -70.57, 3.90 99.20 10/19/2025 23:27:31 -70.49, 5.20 99.27 49.07 70
7 10/20/2025 00:16:56 69.99, 172.11 80.23 10/20/2025 00:17:05 70.00, 172.13 80.25 1.79 9
8 10/20/2025 01:07:38 -69.89, -20.43 99.85 10/20/2025 01:06:35 -69.90, -20.38 99.85 1.96 63
9 10/22/2025 15:43:03 -70.10, 120.43 98.72 10/22/2025 15:44:07 -70.07, 120.48 98.75 3.09 64
10 10/22/2025 16:33:46 69.94, -72.02 81.14 10/22/2025 16:33:34 69.96, -72.04 81.16 2.57 12
11 10/22/2025 17:24:21 -69.47, 95.98 99.32 10/22/2025 17:23:10 -69.53, 95.00 99.27 38.70 71
12 10/25/2025 07:59:52 -70.06,-123.71 97.83 10/25/2025 08:00:34 -70.06,-123.65 97.83 2.36 42
13 10/25/2025 08:50:36 69.95, 43.76 82.08 10/25/2025 08:50:01 69.94, 43.83 82.07 2.78 35

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/13/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251014.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 10/13/2025 in txt file.

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