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: 9/11/2025
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 09/13/2025 04:53:53 70.32, 103.14 66.53 09/13/2025 04:54:56 70.34, 103.12 66.55 2.89 63
2 09/13/2025 05:44:35 -70.22, -89.38 113.56 09/13/2025 05:44:26 -70.23, -89.42 113.55 1.80 9
3 09/13/2025 06:35:11 69.68, 78.73 65.91 09/13/2025 06:34:00 69.74, 77.55 65.99 46.28 71
4 09/15/2025 21:10:53 70.30,-141.07 67.54 09/15/2025 21:11:26 70.29,-141.08 67.52 0.96 33
5 09/15/2025 22:01:35 -70.19, 26.42 112.57 09/15/2025 22:00:56 -70.18, 26.39 112.58 1.62 39
6 09/18/2025 12:37:13 -70.64, 166.83 111.10 09/18/2025 12:38:24 -70.54, 167.53 111.21 28.06 71
7 09/18/2025 13:27:52 70.28, -25.29 68.55 09/18/2025 13:27:54 70.27, -25.22 68.54 2.72 2
8 09/18/2025 14:18:34 -70.17, 142.21 111.56 09/18/2025 14:17:24 -70.16, 142.26 111.56 1.83 70
9 09/21/2025 04:54:07 -70.31, -76.88 110.40 09/21/2025 04:54:57 -70.29, -76.95 110.42 2.98 50
10 09/21/2025 05:44:51 70.22, 90.57 69.52 09/21/2025 05:44:23 70.24, 90.62 69.55 3.11 28
11 09/23/2025 20:20:37 71.05,-129.65 71.39 09/23/2025 20:21:45 70.96,-127.70 71.27 71.61 68
12 09/23/2025 21:11:07 -70.30, 38.90 109.37 09/23/2025 21:11:25 -70.30, 38.95 109.37 2.21 18
13 09/23/2025 22:01:50 70.16,-153.58 70.50 09/23/2025 22:00:53 70.14,-153.64 70.48 3.49 57

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/11/2025
SNOs_Map_NPP_LANDSAT-9_20250912.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 09/11/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9