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: 7/8/2025
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 07/09/2025 20:46:00 71.10,-133.64 48.80 07/09/2025 20:44:53 71.17,-136.17 48.96 91.30 67
2 07/09/2025 21:35:44 -70.23, 32.66 132.04 07/09/2025 21:35:18 -70.21, 32.73 132.06 3.24 26
3 07/09/2025 22:25:11 70.12,-159.84 47.87 07/09/2025 22:26:03 70.13,-159.84 47.87 0.64 52
4 07/12/2025 13:02:42 70.32, -18.95 48.40 07/12/2025 13:01:31 70.29, -18.94 48.39 2.52 71
5 07/12/2025 13:52:12 -70.21, 148.52 131.70 07/12/2025 13:52:13 -70.22, 148.49 131.68 1.74 1
6 07/12/2025 14:41:42 69.93, -44.22 48.05 07/12/2025 14:42:54 69.93, -43.76 48.02 17.71 72
7 07/15/2025 05:19:11 70.28, 96.88 48.78 07/15/2025 05:18:26 70.25, 96.89 48.76 2.73 45
8 07/15/2025 06:08:41 -70.17, -95.64 131.32 07/15/2025 06:09:08 -70.18, -95.67 131.32 1.42 27
9 07/17/2025 20:45:59 -71.10, 46.37 130.00 07/17/2025 20:44:52 -71.13, 43.93 129.87 88.22 67
10 07/17/2025 21:35:40 70.23,-147.30 49.18 07/17/2025 21:35:21 70.22,-147.27 49.17 1.46 19
11 07/17/2025 22:25:10 -70.12, 20.18 130.92 07/17/2025 22:26:03 -70.14, 20.16 130.90 2.28 53
12 07/20/2025 13:02:41 -70.34, 161.10 130.24 07/20/2025 13:01:32 -70.32, 161.04 130.24 2.79 69
13 07/20/2025 13:52:09 70.17, -31.50 49.61 07/20/2025 13:52:16 70.19, -31.45 49.63 3.36 7
14 07/20/2025 14:41:42 -69.90, 135.75 130.64 07/20/2025 14:42:54 -69.90, 136.31 130.66 21.24 72

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 7/8/2025
SNOs_Map_LANDSAT-8_NPP_20250709.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 07/08/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP