Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/17/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 09/19/2025 20:46:42 -70.38, 45.21 110.85 09/19/2025 20:45:38 -70.36, 45.16 110.87 3.17 64
2 09/19/2025 21:36:10 70.23,-147.37 69.01 09/19/2025 21:36:22 70.26,-147.37 69.05 3.51 12
3 09/19/2025 22:25:46 -69.79, 19.64 111.41 09/19/2025 22:26:57 -69.78, 20.68 111.43 39.75 71
4 09/22/2025 13:03:14 -70.28, 160.94 109.91 09/22/2025 13:02:37 -70.30, 161.02 109.90 3.26 37
5 09/22/2025 13:52:41 70.18, -31.56 70.00 09/22/2025 13:53:21 70.20, -31.52 70.03 2.87 40
6 09/25/2025 04:30:10 70.54, 109.58 71.38 09/25/2025 04:28:58 70.62, 108.95 71.47 24.81 72
7 09/25/2025 05:19:43 -70.27, -83.19 108.88 09/25/2025 05:19:36 -70.29, -83.21 108.86 1.93 7
8 09/25/2025 06:09:10 70.17, 84.30 71.03 09/25/2025 06:10:19 70.15, 84.32 71.01 2.35 69
9 09/27/2025 20:46:43 70.35,-134.83 72.23 09/27/2025 20:45:53 70.36,-134.88 72.25 2.28 50
10 09/27/2025 21:36:13 -70.25, 32.65 107.87 09/27/2025 21:36:35 -70.24, 32.63 107.87 1.14 22
11 09/30/2025 12:13:31 -71.23, 174.75 105.87 09/30/2025 12:12:25 -71.29, 172.04 105.79 97.28 66
12 09/30/2025 13:03:13 70.30, -19.02 73.22 09/30/2025 13:02:52 70.32, -19.05 73.24 2.31 21
13 09/30/2025 13:52:43 -70.20, 148.47 106.87 09/30/2025 13:53:34 -70.19, 148.47 106.88 1.09 51

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/17/2025
SNOs_Map_LANDSAT-8_NPP_20250918.jpg

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

Historial Predications of SNOs between LANDSAT-8 and NPP