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: 2/20/2025
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 02/22/2025 14:16:22 -70.18, 142.14 99.82 02/22/2025 14:17:20 -70.17, 142.19 99.84 1.94 58
2 02/22/2025 15:07:06 70.06, -50.37 80.05 02/22/2025 15:06:47 70.06, -50.31 80.05 2.14 19
3 02/22/2025 15:57:36 -69.34, 118.01 100.73 02/22/2025 15:56:27 -69.40, 116.41 100.59 63.17 69
4 02/25/2025 06:33:14 -70.11,-101.97 100.88 02/25/2025 06:33:47 -70.13,-101.97 100.87 2.39 33
5 02/25/2025 07:23:58 70.00, 65.51 78.99 02/25/2025 07:23:14 70.02, 65.52 79.02 3.25 44
6 02/27/2025 21:59:29 70.41,-153.98 78.45 02/27/2025 22:00:41 70.32,-153.44 78.32 22.33 72
7 02/27/2025 22:50:07 -70.12, 13.81 101.89 02/27/2025 22:50:13 -70.10, 13.88 101.91 3.01 6
8 02/27/2025 23:40:51 70.00,-178.71 77.98 02/27/2025 23:39:40 69.99,-178.64 77.98 2.83 71
9 03/02/2025 14:16:16 70.17, -37.80 77.16 03/02/2025 14:17:07 70.18, -37.75 77.16 2.47 51
10 03/02/2025 15:06:57 -70.03, 129.73 103.00 03/02/2025 15:06:38 -70.02, 129.65 103.01 3.10 19
11 03/02/2025 15:57:25 69.06, -61.56 75.97 03/02/2025 15:56:19 69.13, -63.90 76.15 93.50 66
12 03/05/2025 06:33:07 70.09, 78.10 76.05 03/05/2025 06:33:32 70.10, 78.03 76.05 2.76 25
13 03/05/2025 07:23:49 -70.01,-114.45 104.06 03/05/2025 07:23:02 -69.99,-114.49 104.07 2.11 47

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/20/2025
SNOs_Map_NPP_LANDSAT-9_20250220.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/20/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9