Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/17/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 09/19/2025 07:35:14 -70.02,-117.57 111.42 09/19/2025 07:35:44 -70.01,-117.56 111.44 1.43 30
2 09/19/2025 08:25:58 69.92, 49.89 68.50 09/19/2025 08:25:11 69.90, 49.94 68.48 2.57 47
3 09/21/2025 23:01:30 70.38,-169.66 69.98 09/21/2025 23:02:41 70.29,-168.91 69.88 29.81 71
4 09/21/2025 23:52:06 -69.95, -1.69 110.45 09/21/2025 23:52:15 -69.96, -1.74 110.44 2.37 9
5 09/22/2025 00:42:50 69.86, 165.77 69.47 09/22/2025 00:41:42 69.86, 165.76 69.47 0.45 68
6 09/24/2025 15:18:17 70.06, -53.38 70.69 09/24/2025 15:19:15 70.06, -53.35 70.69 1.03 58
7 09/24/2025 16:08:59 -69.95, 114.11 109.41 09/24/2025 16:08:45 -69.96, 114.13 109.41 1.24 14
8 09/24/2025 16:59:31 69.22, -77.52 69.87 09/24/2025 16:58:22 69.30, -79.13 69.96 63.87 69
9 09/27/2025 07:35:08 70.01, 62.48 71.68 09/27/2025 07:35:44 70.04, 62.49 71.71 3.04 36
10 09/27/2025 08:25:50 -69.90,-130.03 108.43 09/27/2025 08:25:15 -69.88,-130.10 108.44 3.42 35
11 09/29/2025 23:01:29 -70.73, 9.81 106.56 09/29/2025 23:02:37 -70.65, 11.62 106.66 67.17 68
12 09/29/2025 23:52:00 69.97, 178.34 72.68 09/29/2025 23:52:14 69.99, 178.31 72.70 3.22 14
13 09/30/2025 00:42:43 -69.90, -14.25 107.38 09/30/2025 00:41:44 -69.89, -14.20 107.39 2.38 59

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/17/2025
SNOs_Map_NOAA-20_LANDSAT-8_20250918.jpg

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 09/17/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-8