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: 5/30/2025
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 06/01/2025 04:52:54 -70.77, -77.66 131.37 06/01/2025 04:54:04 -70.64, -76.55 131.54 43.43 70
2 06/01/2025 05:43:29 70.21, 90.55 48.05 06/01/2025 05:43:37 70.22, 90.47 48.05 2.94 8
3 06/01/2025 06:34:12 -70.15,-102.04 132.03 06/01/2025 06:33:06 -70.15,-101.99 132.02 1.77 66
4 06/03/2025 21:09:42 -70.29, 38.89 132.20 06/03/2025 21:10:37 -70.31, 38.84 132.19 2.56 55
5 06/03/2025 22:00:26 70.20,-153.67 47.71 06/03/2025 22:00:04 70.21,-153.66 47.71 0.58 22
6 06/03/2025 22:50:54 -69.34, 14.93 133.19 06/03/2025 22:49:46 -69.43, 12.90 133.05 79.85 68
7 06/06/2025 13:26:38 -70.29, 154.67 132.49 06/06/2025 13:27:03 -70.29, 154.69 132.50 1.06 25
8 06/06/2025 14:17:21 70.15, -37.81 47.36 06/06/2025 14:16:30 70.18, -37.81 47.40 3.51 51
9 06/09/2025 04:52:52 70.36, 103.01 47.35 06/09/2025 04:54:00 70.35, 103.04 47.33 1.56 68
10 06/09/2025 05:43:34 -70.24, -89.48 132.79 06/09/2025 05:43:30 -70.24, -89.49 132.78 0.62 4
11 06/09/2025 06:34:13 69.89, 78.36 46.85 06/09/2025 06:33:01 69.91, 77.69 46.90 25.69 72
12 06/11/2025 21:09:48 70.32,-141.15 47.11 06/11/2025 21:10:26 70.34,-141.09 47.13 3.23 38
13 06/11/2025 22:00:30 -70.19, 26.36 133.02 06/11/2025 21:59:57 -70.17, 26.31 133.04 2.71 33

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/30/2025
SNOs_Map_NPP_LANDSAT-9_20250530.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/30/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9