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: 5/13/2025
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 05/15/2025 14:52:28 71.05, -48.64 52.00 05/15/2025 14:53:33 70.93, -45.96 51.82 97.98 65
2 05/15/2025 15:42:53 -70.05, 120.29 129.06 05/15/2025 15:43:17 -70.05, 120.37 129.06 2.85 24
3 05/15/2025 16:33:36 69.90, -72.17 50.78 05/15/2025 16:32:45 69.89, -72.21 50.78 1.59 51
4 05/18/2025 07:09:06 70.10, 68.66 50.41 05/18/2025 07:10:13 70.08, 68.67 50.38 2.30 67
5 05/18/2025 07:59:48 -69.99,-123.85 129.72 05/18/2025 07:59:43 -69.97,-123.86 129.75 2.39 5
6 05/18/2025 08:50:26 69.57, 44.07 49.85 05/18/2025 08:49:14 69.64, 43.33 49.93 29.57 72
7 05/20/2025 23:26:02 70.05,-175.50 49.79 05/20/2025 23:26:39 70.03,-175.52 49.76 2.95 37
8 05/21/2025 00:16:44 -69.93, -8.00 130.34 05/21/2025 00:16:09 -69.91, -8.04 130.36 2.69 35
9 05/23/2025 14:52:21 -70.46, 132.32 130.30 05/23/2025 14:53:32 -70.39, 133.25 130.40 35.52 71
10 05/23/2025 15:42:58 70.01, -59.66 49.22 05/23/2025 15:43:04 70.00, -59.66 49.22 0.50 6
11 05/23/2025 16:33:40 -69.89, 107.84 130.91 05/23/2025 16:32:34 -69.89, 107.82 130.90 0.94 66
12 05/26/2025 07:09:10 -70.05,-111.27 131.20 05/26/2025 07:10:02 -70.07,-111.31 131.19 2.47 52
13 05/26/2025 07:59:54 69.97, 56.16 48.71 05/26/2025 07:59:29 69.96, 56.17 48.70 1.42 25

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/13/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250513.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 05/13/2025 in txt file.

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