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: 1/28/2025
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 01/29/2025 14:16:30 70.13, -37.86 87.92 01/29/2025 14:17:17 70.13, -37.82 87.91 1.38 47
2 01/29/2025 15:07:12 -70.02, 129.63 92.21 01/29/2025 15:06:47 -70.01, 129.65 92.21 0.95 25
3 02/01/2025 05:42:55 -70.98, -90.77 91.91 02/01/2025 05:44:02 -70.90, -88.43 92.10 85.80 67
4 02/01/2025 06:33:23 70.05, 78.03 87.10 02/01/2025 06:33:42 70.08, 78.01 87.12 3.26 19
5 02/01/2025 07:24:05 -69.94,-114.48 93.03 02/01/2025 07:23:12 -69.97,-114.52 93.00 3.23 53
6 02/03/2025 21:59:34 -70.14, 26.37 93.59 02/03/2025 22:00:40 -70.15, 26.36 93.59 1.62 66
7 02/03/2025 22:50:18 70.04,-166.18 86.31 02/03/2025 22:50:07 70.04,-166.15 86.30 1.10 11
8 02/03/2025 23:40:54 -69.62, 1.78 94.16 02/03/2025 23:39:42 -69.66, 0.95 94.07 32.46 72
9 02/06/2025 14:16:29 -70.14, 142.14 94.40 02/06/2025 14:17:04 -70.12, 142.22 94.43 3.66 35
10 02/06/2025 15:07:12 69.99, -50.33 85.44 02/06/2025 15:06:31 70.01, -50.30 85.46 1.54 41
11 02/09/2025 05:42:44 70.37, 90.24 85.02 02/09/2025 05:43:55 70.31, 90.77 84.92 20.96 71
12 02/09/2025 06:33:22 -70.05,-101.94 95.34 02/09/2025 06:33:28 -70.04,-101.99 95.35 2.03 6
13 02/09/2025 07:24:06 69.96, 65.51 84.56 02/09/2025 07:22:54 69.98, 65.57 84.58 3.15 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/28/2025
SNOs_Map_NPP_LANDSAT-9_20250128.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/28/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9