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: 6/26/2025
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 06/27/2025 21:09:54 70.27,-141.05 46.95 06/27/2025 21:10:54 70.29,-141.06 46.97 2.77 60
2 06/27/2025 22:00:36 -70.17, 26.41 133.15 06/27/2025 22:00:24 -70.18, 26.41 133.14 0.61 12
3 06/27/2025 22:51:10 69.53,-165.31 46.19 06/27/2025 22:50:00 69.58,-166.78 46.29 57.37 70
4 06/30/2025 13:26:50 70.26, -25.26 47.09 06/30/2025 13:27:25 70.23, -25.27 47.06 2.91 35
5 06/30/2025 14:17:31 -70.11, 142.28 133.06 06/30/2025 14:16:55 -70.12, 142.21 133.04 3.07 36
6 07/03/2025 04:53:11 -70.83, -77.72 132.10 07/03/2025 04:54:20 -70.76, -76.25 132.24 54.69 69
7 07/03/2025 05:43:45 70.20, 90.61 47.23 07/03/2025 05:43:55 70.21, 90.59 47.24 1.73 10
8 07/03/2025 06:34:27 -70.11,-101.93 132.86 07/03/2025 06:33:25 -70.11,-101.93 132.86 0.11 62
9 07/05/2025 21:09:56 -70.31, 38.90 132.41 07/05/2025 21:10:57 -70.29, 38.94 132.44 2.65 61
10 07/05/2025 22:00:40 70.20,-153.61 47.48 07/05/2025 22:00:24 70.18,-153.58 47.46 2.32 16
11 07/05/2025 22:51:12 -69.58, 14.64 133.17 07/05/2025 22:50:02 -69.64, 13.30 133.05 52.26 70
12 07/08/2025 13:26:51 -70.26, 154.75 132.17 07/08/2025 13:27:27 -70.25, 154.76 132.19 1.42 36
13 07/08/2025 14:17:35 70.14, -37.76 47.72 07/08/2025 14:16:54 70.13, -37.76 47.71 1.44 41

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/26/2025
SNOs_Map_NPP_LANDSAT-9_20250626.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/26/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9