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: 1/24/2025
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 01/26/2025 21:59:38 70.32,-153.93 88.83 01/26/2025 22:00:49 70.24,-153.55 88.72 16.79 71
2 01/26/2025 22:50:17 -70.05, 13.81 91.47 01/26/2025 22:50:20 -70.07, 13.84 91.46 2.61 3
3 01/26/2025 23:41:00 69.90,-178.66 88.37 01/26/2025 23:39:48 69.91,-178.74 88.39 3.20 72
4 01/29/2025 14:16:30 70.13, -37.86 87.92 01/29/2025 14:17:17 70.12, -37.82 87.91 1.38 47
5 01/29/2025 15:07:12 -70.02, 129.63 92.21 01/29/2025 15:06:47 -70.01, 129.65 92.21 0.85 25
6 02/01/2025 05:42:55 -70.98, -90.77 91.91 02/01/2025 05:44:02 -70.89, -88.43 92.11 85.56 67
7 02/01/2025 06:33:23 70.06, 78.03 87.10 02/01/2025 06:33:42 70.07, 77.99 87.11 1.89 19
8 02/01/2025 07:24:05 -69.94,-114.48 93.03 02/01/2025 07:23:12 -69.96,-114.53 93.01 2.64 53
9 02/03/2025 21:59:34 -70.14, 26.36 93.58 02/03/2025 22:00:40 -70.13, 26.34 93.61 1.46 66
10 02/03/2025 22:50:17 70.00,-166.11 86.26 02/03/2025 22:50:07 70.02,-166.18 86.28 3.43 10
11 02/03/2025 23:40:53 -69.57, 1.85 94.21 02/03/2025 23:39:42 -69.63, 0.92 94.09 36.78 71
12 02/06/2025 14:16:28 -70.10, 142.21 94.45 02/06/2025 14:17:04 -70.08, 142.17 94.47 2.05 36
13 02/06/2025 15:07:12 70.01, -50.34 85.45 02/06/2025 15:06:30 70.02, -50.27 85.47 2.99 42

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/24/2025
SNOs_Map_NPP_LANDSAT-9_20250125.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/24/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9