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: 4/10/2025
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 04/11/2025 00:16:06 70.03, 171.99 61.64 04/11/2025 00:16:35 70.01, 172.07 61.62 3.48 29
2 04/11/2025 01:06:47 -69.90, -20.49 118.51 04/11/2025 01:06:05 -69.90, -20.45 118.50 1.69 42
3 04/13/2025 15:42:24 -70.30, 120.02 119.05 04/13/2025 15:43:35 -70.22, 120.60 119.15 23.20 71
4 04/13/2025 16:33:04 69.96, -72.15 60.59 04/13/2025 16:33:05 69.95, -72.14 60.58 1.16 1
5 04/13/2025 17:23:45 -69.82, 95.37 119.56 04/13/2025 17:22:35 -69.84, 95.34 119.54 2.37 70
6 04/16/2025 07:59:17 -70.02,-123.80 120.29 04/16/2025 08:00:06 -70.00,-123.83 120.32 2.60 49
7 04/16/2025 08:50:01 69.90, 43.69 59.57 04/16/2025 08:49:33 69.89, 43.66 59.57 1.82 28
8 04/18/2025 23:25:46 70.75,-176.51 59.54 04/18/2025 23:26:54 70.61,-174.71 59.35 68.28 68
9 04/19/2025 00:16:15 -69.97, -7.96 121.29 04/19/2025 00:16:34 -69.95, -8.02 121.31 2.87 19
10 04/19/2025 01:06:59 69.86, 159.52 58.59 04/19/2025 01:06:01 69.84, 159.47 58.58 2.75 58
11 04/21/2025 15:42:31 70.03, -59.61 57.87 04/21/2025 15:43:31 70.01, -59.68 57.85 3.40 60
12 04/21/2025 16:33:13 -69.93, 107.86 122.25 04/21/2025 16:33:01 -69.91, 107.81 122.27 2.97 12
13 04/21/2025 17:23:46 69.23, -83.82 57.03 04/21/2025 17:22:37 69.29, -85.38 57.13 61.80 69

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/10/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250410.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/10/2025 in txt file.

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