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: 7/1/2025
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 07/03/2025 04:53:10 -70.83, -77.71 132.11 07/03/2025 04:54:20 -70.71, -76.32 132.29 52.55 70
2 07/03/2025 05:43:45 70.24, 90.55 47.27 07/03/2025 05:43:54 70.22, 90.61 47.26 2.52 9
3 07/03/2025 06:34:26 -70.10,-101.92 132.87 07/03/2025 06:33:24 -70.11,-101.92 132.85 1.58 62
4 07/05/2025 21:09:56 -70.31, 38.91 132.41 07/05/2025 21:10:57 -70.30, 38.95 132.43 1.72 61
5 07/05/2025 22:00:40 70.18,-153.59 47.47 07/05/2025 22:00:24 70.19,-153.56 47.47 1.50 16
6 07/05/2025 22:51:12 -69.57, 14.65 133.17 07/05/2025 22:50:02 -69.64, 13.31 133.05 52.49 70
7 07/08/2025 13:26:51 -70.26, 154.76 132.17 07/08/2025 13:27:27 -70.26, 154.77 132.18 0.55 36
8 07/08/2025 14:17:35 70.14, -37.74 47.71 07/08/2025 14:16:54 70.14, -37.74 47.72 0.96 41
9 07/11/2025 04:53:11 70.67, 102.57 48.60 07/11/2025 04:54:22 70.57, 103.50 48.47 35.87 71
10 07/11/2025 05:43:46 -70.22, -89.39 131.87 07/11/2025 05:43:57 -70.20, -89.42 131.89 1.97 11
11 07/11/2025 06:34:30 70.09, 78.10 48.01 07/11/2025 06:33:24 70.09, 78.06 48.01 1.78 66
12 07/13/2025 21:09:58 70.26,-141.01 48.56 07/13/2025 21:10:55 70.28,-141.05 48.57 2.95 57
13 07/13/2025 22:00:40 -70.18, 26.44 131.53 07/13/2025 22:00:25 -70.19, 26.45 131.52 0.95 15
14 07/13/2025 22:51:11 69.36,-165.04 47.63 07/13/2025 22:50:03 69.46,-166.92 47.81 74.05 68

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/1/2025
SNOs_Map_NPP_LANDSAT-9_20250701.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 07/01/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9