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: 1/10/2025
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 01/10/2025 21:59:33 70.48,-154.18 92.30 01/10/2025 22:00:44 70.37,-153.33 92.15 33.90 71
2 01/10/2025 22:50:09 -70.06, 13.80 88.16 01/10/2025 22:50:18 -70.04, 13.82 88.18 1.99 9
3 01/10/2025 23:40:53 69.96,-178.74 91.74 01/10/2025 23:39:45 69.94,-178.68 91.72 3.32 68
4 01/13/2025 14:16:23 70.11, -37.83 91.47 01/13/2025 14:17:17 70.13, -37.81 91.48 1.73 54
5 01/13/2025 15:07:05 -70.00, 129.66 88.66 01/13/2025 15:06:47 -70.02, 129.67 88.64 2.29 18
6 01/13/2025 15:57:35 69.16, -61.81 90.46 01/13/2025 15:56:27 69.19, -63.81 90.57 79.32 68
7 01/16/2025 06:33:19 70.06, 78.01 90.94 01/16/2025 06:33:46 70.06, 77.97 90.92 1.68 27
8 01/16/2025 07:24:01 -69.95,-114.49 89.20 01/16/2025 07:23:16 -69.95,-114.54 89.19 1.79 45
9 01/18/2025 21:59:34 -70.27, 26.15 89.37 01/18/2025 22:00:45 -70.23, 26.46 89.44 12.80 71
10 01/18/2025 22:50:14 70.03,-166.16 90.37 01/18/2025 22:50:12 70.06,-166.14 90.39 3.33 2
11 01/18/2025 23:40:56 -69.91, 1.33 89.77 01/18/2025 23:39:43 -69.90, 1.27 89.77 2.46 73
12 01/21/2025 14:16:26 -70.09, 142.21 90.15 01/21/2025 14:17:13 -70.08, 142.14 90.16 2.56 47
13 01/21/2025 15:07:10 70.00, -50.35 89.76 01/21/2025 15:06:39 70.02, -50.30 89.78 2.49 31

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/10/2025
SNOs_Map_NPP_LANDSAT-9_20250110.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/10/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9