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: 9/20/2026
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 09/22/2026 14:10:34 -71.46, 145.80 108.81 09/22/2026 14:09:23 -71.51, 144.59 108.75 42.87 71
2 09/22/2026 15:00:07 71.04, -47.24 70.78 09/22/2026 15:00:00 71.05, -47.29 70.80 2.64 7
3 09/22/2026 15:49:37 -70.92, 120.22 109.32 09/22/2026 15:50:42 -70.95, 120.21 109.30 2.35 65
4 09/25/2026 06:27:11 -71.11, -98.90 108.12 09/25/2026 06:26:12 -71.08, -98.86 108.15 3.03 59
5 09/25/2026 07:16:38 71.00, 68.59 71.79 09/25/2026 07:16:56 70.99, 68.60 71.78 1.61 18
6 09/25/2026 08:06:19 -70.30,-124.85 108.91 09/25/2026 08:07:27 -70.30,-122.95 108.90 71.20 68
7 09/27/2026 22:43:42 -71.07, 16.92 107.12 09/27/2026 22:43:09 -71.07, 16.94 107.12 1.07 33
8 09/27/2026 23:33:09 70.96,-175.60 72.79 09/27/2026 23:33:53 70.98,-175.60 72.82 2.52 44
9 09/30/2026 14:10:39 71.28, -34.49 74.13 09/30/2026 14:09:26 71.34, -35.07 74.19 21.52 73
10 09/30/2026 15:00:11 -71.07, 132.80 106.08 09/30/2026 15:00:05 -71.06, 132.74 106.09 2.41 6
11 09/30/2026 15:49:38 70.96, -59.72 73.83 09/30/2026 15:50:48 70.93, -59.72 73.80 3.74 70
12 10/03/2026 06:27:12 71.11, 81.11 75.00 10/03/2026 06:26:19 71.14, 81.08 75.02 2.90 53
13 10/03/2026 07:16:42 -71.01,-111.41 105.10 10/03/2026 07:17:01 -71.00,-111.37 105.11 1.70 19

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/20/2026
SNOs_Map_LANDSAT-8_NPP_20260920.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/20/2026 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP