Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/5/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 09/07/2025 21:10:36 -70.30, 38.97 115.50 09/07/2025 21:11:26 -70.33, 38.97 115.48 3.50 50
2 09/07/2025 22:01:20 70.18,-153.54 64.39 09/07/2025 22:00:54 70.18,-153.61 64.39 2.66 26
3 09/07/2025 22:51:45 -69.19, 15.25 116.61 09/07/2025 22:50:39 -69.24, 12.74 116.52 99.22 66
4 09/10/2025 12:37:07 71.10, -13.90 66.32 09/10/2025 12:38:14 71.01, -11.74 66.20 78.40 67
5 09/10/2025 13:27:35 -70.26, 154.79 114.53 09/10/2025 13:27:56 -70.25, 154.73 114.55 2.64 21
6 09/10/2025 14:18:19 70.15, -37.73 65.37 09/10/2025 14:17:23 70.14, -37.77 65.36 1.70 56
7 09/13/2025 04:53:53 70.34, 103.10 66.56 09/13/2025 04:54:55 70.35, 103.13 66.56 1.35 62
8 09/13/2025 05:44:35 -70.23, -89.41 113.55 09/13/2025 05:44:25 -70.24, -89.39 113.54 0.99 10
9 09/13/2025 06:35:10 69.65, 78.78 65.88 09/13/2025 06:34:00 69.69, 77.48 65.94 50.22 70
10 09/15/2025 21:10:52 70.28,-141.04 67.52 09/15/2025 21:11:24 70.31,-141.04 67.54 3.29 32
11 09/15/2025 22:01:35 -70.21, 26.38 112.54 09/15/2025 22:00:54 -70.20, 26.43 112.55 2.65 41
12 09/18/2025 12:37:12 -70.57, 166.94 111.17 09/18/2025 12:38:23 -70.51, 167.49 111.25 21.63 71
13 09/18/2025 13:27:51 70.22, -25.19 68.49 09/18/2025 13:27:53 70.23, -25.26 68.50 3.17 2
14 09/18/2025 14:18:34 -70.15, 142.23 111.57 09/18/2025 14:17:23 -70.13, 142.22 111.60 2.73 71

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/5/2025
SNOs_Map_NPP_LANDSAT-9_20250906.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 09/05/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9