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: 10/12/2025
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 10/13/2025 20:46:45 70.33,-134.87 78.33 10/13/2025 20:46:14 70.33,-134.86 78.33 0.47 31
2 10/13/2025 21:36:15 -70.21, 32.60 101.78 10/13/2025 21:36:56 -70.21, 32.64 101.78 1.52 41
3 10/16/2025 12:13:44 -70.58, 173.73 100.45 10/16/2025 12:12:32 -70.62, 173.13 100.40 22.64 72
4 10/16/2025 13:03:14 70.31, -19.02 79.30 10/16/2025 13:03:12 70.32, -19.07 79.31 2.41 2
5 10/16/2025 13:52:44 -70.20, 148.45 100.81 10/16/2025 13:53:54 -70.20, 148.42 100.80 1.30 70
6 10/19/2025 04:30:15 -70.37, -70.69 99.69 10/19/2025 04:29:24 -70.36, -70.67 99.69 1.28 51
7 10/19/2025 05:19:42 70.26, 96.79 80.22 10/19/2025 05:20:08 70.27, 96.78 80.23 1.00 26
8 10/21/2025 19:57:01 71.11,-121.31 82.01 10/21/2025 19:55:53 71.16,-123.55 82.06 80.60 68
9 10/21/2025 20:46:43 -70.34, 45.16 98.75 10/21/2025 20:46:22 -70.36, 45.09 98.73 3.57 21
10 10/21/2025 21:36:10 70.23,-147.35 81.15 10/21/2025 21:37:05 70.22,-147.38 81.14 1.58 55
11 10/24/2025 12:13:41 70.40, -6.51 82.23 10/24/2025 12:12:36 70.39, -6.50 82.23 0.31 65
12 10/24/2025 13:03:11 -70.29, 160.98 97.87 10/24/2025 13:03:18 -70.28, 161.00 97.88 2.03 7
13 10/24/2025 13:52:45 69.79, -32.09 81.65 10/24/2025 13:53:55 69.82, -30.99 81.68 42.30 70

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/12/2025
SNOs_Map_LANDSAT-8_NPP_20251013.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/12/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP