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: 2/13/2025
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 02/14/2025 14:16:27 70.12, -37.81 82.97 02/14/2025 14:17:22 70.14, -37.84 82.98 3.13 55
2 02/14/2025 15:07:09 -70.02, 129.65 97.15 02/14/2025 15:06:52 -70.03, 129.64 97.14 1.26 17
3 02/14/2025 15:57:39 69.17, -61.79 81.95 02/14/2025 15:56:32 69.21, -63.83 82.09 80.94 67
4 02/17/2025 06:33:21 70.12, 77.97 82.04 02/17/2025 06:33:52 70.11, 77.99 82.02 0.99 31
5 02/17/2025 07:24:03 -70.02,-114.56 98.08 02/17/2025 07:23:22 -70.00,-114.53 98.10 2.67 41
6 02/19/2025 21:59:37 -70.60, 25.68 98.39 02/19/2025 22:00:47 -70.53, 26.83 98.53 43.34 70
7 02/19/2025 22:50:13 70.07,-166.18 81.04 02/19/2025 22:50:20 70.09,-166.16 81.05 1.94 7
8 02/19/2025 23:40:55 -69.98, 1.28 99.08 02/19/2025 23:39:50 -69.99, 1.32 99.07 1.61 65
9 02/22/2025 14:16:22 -70.15, 142.18 99.85 02/22/2025 14:17:22 -70.15, 142.16 99.86 1.06 60
10 02/22/2025 15:07:06 70.04, -50.34 80.03 02/22/2025 15:06:49 70.03, -50.36 80.02 1.21 17
11 02/22/2025 15:57:37 -69.37, 117.97 100.70 02/22/2025 15:56:28 -69.43, 116.45 100.56 59.86 69
12 02/25/2025 06:33:15 -70.13,-102.00 100.86 02/25/2025 06:33:50 -70.11,-102.02 100.89 2.68 35
13 02/25/2025 07:23:59 70.02, 65.47 79.02 02/25/2025 07:23:17 69.99, 65.47 78.99 3.41 42

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/13/2025
SNOs_Map_NPP_LANDSAT-9_20250213.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/13/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9