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: 7/4/2025
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 07/05/2025 21:09:56 -70.28, 38.96 132.44 07/05/2025 21:10:58 -70.26, 38.90 132.47 2.51 62
2 07/05/2025 22:00:40 70.15,-153.54 47.43 07/05/2025 22:00:25 70.16,-153.60 47.44 2.41 15
3 07/05/2025 22:51:13 -69.60, 14.61 133.15 07/05/2025 22:50:03 -69.61, 13.26 133.08 52.32 70
4 07/08/2025 13:26:51 -70.28, 154.72 132.14 07/08/2025 13:27:26 -70.27, 154.79 132.17 3.11 35
5 07/08/2025 14:17:35 70.16, -37.77 47.73 07/08/2025 14:16:53 70.16, -37.71 47.74 2.28 42
6 07/11/2025 04:53:11 70.69, 102.53 48.63 07/11/2025 04:54:21 70.58, 103.51 48.47 38.05 70
7 07/11/2025 05:43:45 -70.19, -89.35 131.90 07/11/2025 05:43:56 -70.20, -89.42 131.89 2.80 11
8 07/11/2025 06:34:30 70.12, 78.07 48.03 07/11/2025 06:33:23 70.09, 78.07 48.01 2.73 67
9 07/13/2025 21:09:59 70.28,-141.04 48.58 07/13/2025 21:10:55 70.28,-141.05 48.57 1.00 56
10 07/13/2025 22:00:40 -70.15, 26.48 131.55 07/13/2025 22:00:25 -70.17, 26.43 131.53 3.15 15
11 07/13/2025 22:51:12 69.39,-165.08 47.66 07/13/2025 22:50:04 69.40,-167.00 47.75 75.20 68
12 07/16/2025 13:26:54 70.25, -25.22 48.98 07/16/2025 13:27:24 70.23, -25.23 48.95 2.58 30
13 07/16/2025 14:17:35 -70.12, 142.31 131.16 07/16/2025 14:16:54 -70.13, 142.26 131.14 2.26 41

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/4/2025
SNOs_Map_NPP_LANDSAT-9_20250704.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 07/04/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9