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: 9/20/2025
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 09/22/2025 13:03:13 -70.33, 161.01 109.86 09/22/2025 13:02:37 -70.30, 161.02 109.89 3.50 36
2 09/22/2025 13:52:41 70.17, -31.57 70.00 09/22/2025 13:53:21 70.20, -31.52 70.03 3.36 40
3 09/25/2025 04:30:10 70.54, 109.56 71.37 09/25/2025 04:28:58 70.62, 108.94 71.47 25.07 72
4 09/25/2025 05:19:43 -70.26, -83.21 108.89 09/25/2025 05:19:35 -70.24, -83.14 108.91 3.39 8
5 09/25/2025 06:09:10 70.16, 84.29 71.02 09/25/2025 06:10:19 70.15, 84.32 71.02 1.42 69
6 09/27/2025 20:46:43 70.33,-134.85 72.21 09/27/2025 20:45:52 70.32,-134.81 72.20 2.64 51
7 09/27/2025 21:36:13 -70.23, 32.62 107.88 09/27/2025 21:36:35 -70.25, 32.62 107.86 2.08 22
8 09/30/2025 12:13:31 -71.20, 174.71 105.89 09/30/2025 12:12:24 -71.25, 172.10 105.83 93.43 67
9 09/30/2025 13:03:13 70.28, -19.05 73.20 09/30/2025 13:02:51 70.28, -18.98 73.20 2.68 22
10 09/30/2025 13:52:42 -70.23, 148.51 106.85 09/30/2025 13:53:34 -70.20, 148.45 106.87 3.43 52
11 10/03/2025 04:30:15 -70.37, -70.68 105.70 10/03/2025 04:29:07 -70.38, -70.69 105.68 1.23 68
12 10/03/2025 05:19:42 70.25, 96.80 74.21 10/03/2025 05:19:50 70.25, 96.83 74.20 1.57 8
13 10/03/2025 06:09:17 -69.88, -96.11 106.16 10/03/2025 06:10:28 -69.90, -95.33 106.13 29.75 71

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_LANDSAT-8_NPP_20250920.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP