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: 1/30/2025
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 02/01/2025 05:42:56 -71.01, -90.83 91.88 02/01/2025 05:44:02 -70.93, -88.38 92.07 89.06 66
2 02/01/2025 06:33:24 70.08, 77.99 87.13 02/01/2025 06:33:43 70.06, 77.97 87.10 2.77 19
3 02/01/2025 07:24:06 -69.97,-114.53 93.00 02/01/2025 07:23:12 -70.00,-114.48 92.97 3.36 54
4 02/03/2025 21:59:34 -70.12, 26.40 93.61 02/03/2025 22:00:41 -70.13, 26.33 93.60 3.17 67
5 02/03/2025 22:50:18 70.02,-166.14 86.28 02/03/2025 22:50:08 70.02,-166.18 86.29 1.30 10
6 02/03/2025 23:40:54 -69.59, 1.81 94.18 02/03/2025 23:39:43 -69.64, 0.92 94.09 34.73 71
7 02/06/2025 14:16:28 -70.12, 142.17 94.42 02/06/2025 14:17:04 -70.11, 142.21 94.44 1.55 36
8 02/06/2025 15:07:11 69.97, -50.29 85.42 02/06/2025 15:06:31 70.00, -50.31 85.45 3.20 40
9 02/09/2025 05:42:44 70.41, 90.18 85.05 02/09/2025 05:43:55 70.33, 90.78 84.93 24.11 71
10 02/09/2025 06:33:21 -70.03,-101.92 95.36 02/09/2025 06:33:28 -70.05,-101.98 95.34 3.07 7
11 02/09/2025 07:24:05 69.94, 65.54 84.54 02/09/2025 07:22:55 69.94, 65.50 84.54 1.28 70
12 02/11/2025 21:59:33 70.12,-153.59 83.88 02/11/2025 22:00:21 70.11,-153.63 83.85 2.28 48
13 02/11/2025 22:50:15 -70.01, 13.90 96.26 02/11/2025 22:49:51 -70.00, 13.85 96.27 2.27 24

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/30/2025
SNOs_Map_NPP_LANDSAT-9_20250130.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/30/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9