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: 9/15/2025
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 09/17/2025 04:30:00 -71.05, -69.65 111.23 09/17/2025 04:28:52 -71.07, -71.76 111.17 76.37 68
2 09/17/2025 05:19:38 70.30, 96.86 68.05 09/17/2025 05:19:22 70.29, 96.82 68.04 1.57 16
3 09/17/2025 06:09:08 -70.18, -95.67 112.06 09/17/2025 06:10:04 -70.18, -95.69 112.06 0.79 56
4 09/19/2025 20:46:42 -70.37, 45.19 110.86 09/19/2025 20:45:38 -70.37, 45.14 110.85 2.19 64
5 09/19/2025 21:36:10 70.21,-147.39 69.00 09/19/2025 21:36:21 70.22,-147.32 69.01 3.09 11
6 09/19/2025 22:25:46 -69.77, 19.62 111.43 09/19/2025 22:26:56 -69.74, 20.73 111.47 42.81 70
7 09/22/2025 13:03:13 -70.33, 161.01 109.87 09/22/2025 13:02:37 -70.31, 161.00 109.88 1.57 36
8 09/22/2025 13:52:40 70.22, -31.50 70.04 09/22/2025 13:53:21 70.22, -31.55 70.04 1.77 41
9 09/25/2025 04:30:11 70.53, 109.56 71.37 09/25/2025 04:28:58 70.59, 109.00 71.44 21.74 73
10 09/25/2025 05:19:44 -70.26, -83.20 108.89 09/25/2025 05:19:36 -70.26, -83.15 108.90 2.03 8
11 09/25/2025 06:09:11 70.15, 84.28 71.02 09/25/2025 06:10:20 70.17, 84.29 71.03 1.51 69
12 09/27/2025 20:46:44 70.34,-134.84 72.22 09/27/2025 20:45:53 70.33,-134.83 72.22 0.90 51
13 09/27/2025 21:36:13 -70.24, 32.64 107.87 09/27/2025 21:36:35 -70.26, 32.60 107.85 2.60 22

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/15/2025
SNOs_Map_LANDSAT-8_NPP_20250916.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/15/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP