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: 3/3/2025
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 03/05/2025 06:33:08 70.13, 78.05 76.08 03/05/2025 06:33:45 70.10, 77.98 76.05 3.48 37
2 03/05/2025 07:23:50 -70.05,-114.52 104.01 03/05/2025 07:23:14 -70.05,-114.46 104.02 2.24 36
3 03/07/2025 21:59:27 -70.87, 25.33 104.16 03/07/2025 22:00:35 -70.81, 27.25 104.32 70.46 68
4 03/07/2025 22:49:59 70.12,-166.15 75.03 03/07/2025 22:50:13 70.10,-166.15 75.00 2.24 14
5 03/07/2025 23:40:40 -69.99, 1.36 105.12 03/07/2025 23:39:43 -69.99, 1.33 105.12 1.06 57
6 03/10/2025 14:16:06 -70.20, 142.21 105.93 03/10/2025 14:17:14 -70.22, 142.25 105.93 2.65 68
7 03/10/2025 15:06:50 70.07, -50.29 73.92 03/10/2025 15:06:42 70.05, -50.34 73.90 2.98 8
8 03/10/2025 15:57:27 -69.73, 117.54 106.45 03/10/2025 15:56:15 -69.78, 116.92 106.37 24.41 72
9 03/13/2025 06:32:57 -70.16,-101.94 107.03 03/13/2025 06:33:42 -70.18,-101.91 107.02 2.57 45
10 03/13/2025 07:23:41 70.04, 65.56 72.83 03/13/2025 07:23:10 70.01, 65.49 72.81 3.49 31
11 03/15/2025 21:59:21 71.00,-154.83 72.81 03/15/2025 22:00:28 70.86,-152.64 72.59 80.89 67
12 03/15/2025 22:49:48 -70.14, 13.89 108.12 03/15/2025 22:50:09 -70.16, 13.94 108.11 3.21 21
13 03/15/2025 23:40:32 70.01,-178.62 71.74 03/15/2025 23:39:37 69.99,-178.65 71.72 3.25 55

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/3/2025
SNOs_Map_NPP_LANDSAT-9_20250303.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/03/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9