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: 9/25/2025
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 09/27/2025 20:46:42 70.32,-134.88 72.20 09/27/2025 20:45:52 70.34,-134.84 72.22 2.87 50
2 09/27/2025 21:36:12 -70.20, 32.59 107.91 09/27/2025 21:36:34 -70.22, 32.66 107.89 3.39 22
3 09/30/2025 12:13:29 -71.17, 174.67 105.92 09/30/2025 12:12:22 -71.19, 172.21 105.89 88.27 67
4 09/30/2025 13:03:10 70.31, -19.00 73.23 09/30/2025 13:02:51 70.32, -19.04 73.24 1.61 19
5 09/30/2025 13:52:40 -70.20, 148.47 106.88 09/30/2025 13:53:33 -70.19, 148.46 106.88 0.33 53
6 10/03/2025 04:30:11 -70.37, -70.67 105.69 10/03/2025 04:29:06 -70.39, -70.70 105.67 2.41 65
7 10/03/2025 05:19:38 70.26, 96.82 74.22 10/03/2025 05:19:49 70.25, 96.83 74.21 1.26 11
8 10/03/2025 06:09:14 -69.82, -96.17 106.21 10/03/2025 06:10:25 -69.81, -95.18 106.23 37.84 71
9 10/05/2025 20:46:38 -70.34, 45.18 104.69 10/05/2025 20:46:04 -70.33, 45.15 104.70 1.36 34
10 10/05/2025 21:36:05 70.23,-147.34 75.21 10/05/2025 21:36:48 70.25,-147.41 75.24 3.42 43
11 10/08/2025 12:13:33 70.43, -6.43 76.41 10/08/2025 12:12:20 70.47, -6.61 76.45 8.13 73
12 10/08/2025 13:03:04 -70.27, 160.97 103.74 10/08/2025 13:03:01 -70.28, 160.99 103.72 1.80 3
13 10/08/2025 13:52:31 70.16, -31.55 76.16 10/08/2025 13:53:44 70.15, -31.49 76.16 2.12 73

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/25/2025
SNOs_Map_LANDSAT-8_NPP_20250926.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/25/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP