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: 6/24/2025
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 06/25/2025 04:53:08 70.78, 102.34 47.39 06/25/2025 04:54:17 70.69, 103.65 47.24 49.07 69
2 06/25/2025 05:43:41 -70.22, -89.43 133.21 06/25/2025 05:43:54 -70.19, -89.46 133.24 3.04 13
3 06/25/2025 06:34:25 70.10, 78.05 46.68 06/25/2025 06:33:21 70.09, 78.05 46.67 1.64 64
4 06/27/2025 21:09:55 70.30,-141.10 46.98 06/27/2025 21:10:54 70.31,-141.03 46.99 2.93 59
5 06/27/2025 22:00:37 -70.20, 26.37 133.12 06/27/2025 22:00:24 -70.20, 26.44 133.12 2.79 13
6 06/27/2025 22:51:10 69.51,-165.28 46.16 06/27/2025 22:50:01 69.55,-166.83 46.26 60.33 69
7 06/30/2025 13:26:50 70.23, -25.22 47.07 06/30/2025 13:27:25 70.25, -25.24 47.08 1.96 35
8 06/30/2025 14:17:32 -70.14, 142.24 133.03 06/30/2025 14:16:55 -70.14, 142.24 133.02 0.60 37
9 07/03/2025 04:53:10 -70.81, -77.68 132.13 07/03/2025 04:54:20 -70.72, -76.30 132.27 51.49 70
10 07/03/2025 05:43:45 70.23, 90.56 47.26 07/03/2025 05:43:54 70.23, 90.61 47.26 1.90 9
11 07/03/2025 06:34:27 -70.13,-101.97 132.84 07/03/2025 06:33:24 -70.13,-101.90 132.84 2.78 63
12 07/05/2025 21:09:56 -70.28, 38.94 132.44 07/05/2025 21:10:57 -70.31, 38.97 132.42 3.24 61
13 07/05/2025 22:00:40 70.17,-153.57 47.45 07/05/2025 22:00:24 70.20,-153.55 47.48 3.01 16
14 07/05/2025 22:51:13 -69.60, 14.60 133.14 07/05/2025 22:50:02 -69.66, 13.33 133.03 49.77 71

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/24/2025
SNOs_Map_NPP_LANDSAT-9_20250624.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/24/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9