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: 1/29/2025
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 14:16:29 70.09, -37.80 87.88 01/29/2025 14:17:17 70.11, -37.85 87.89 2.54 48
2 01/29/2025 15:07:11 -69.98, 129.68 92.25 01/29/2025 15:06:47 -69.99, 129.62 92.23 2.43 24
3 02/01/2025 05:42:56 -71.00, -90.81 91.89 02/01/2025 05:44:03 -70.87, -88.47 92.12 86.33 67
4 02/01/2025 06:33:24 70.07, 78.00 87.12 02/01/2025 06:33:43 70.06, 77.97 87.10 2.13 19
5 02/01/2025 07:24:06 -69.96,-114.51 93.01 02/01/2025 07:23:13 -69.94,-114.55 93.02 2.64 53
6 02/03/2025 21:59:34 -70.16, 26.33 93.56 02/03/2025 22:00:39 -70.18, 26.39 93.56 2.86 65
7 02/03/2025 22:50:17 70.01,-166.13 86.28 02/03/2025 22:50:07 70.01,-166.20 86.27 2.51 10
8 02/03/2025 23:40:53 -69.59, 1.82 94.19 02/03/2025 23:39:42 -69.62, 0.90 94.10 35.83 71
9 02/06/2025 14:16:28 -70.11, 142.18 94.43 02/06/2025 14:17:03 -70.14, 142.24 94.41 3.36 35
10 02/06/2025 15:07:11 69.97, -50.28 85.41 02/06/2025 15:06:31 69.97, -50.35 85.42 2.64 40
11 02/09/2025 05:42:43 70.35, 90.28 84.99 02/09/2025 05:43:55 70.26, 90.70 84.88 18.47 72
12 02/09/2025 06:33:21 -70.03,-101.91 95.36 02/09/2025 06:33:27 -70.05,-101.98 95.35 3.51 6
13 02/09/2025 07:24:05 69.93, 65.54 84.53 02/09/2025 07:22:54 69.93, 65.50 84.54 1.78 71
14 02/11/2025 21:59:33 70.12,-153.58 83.87 02/11/2025 22:00:19 70.12,-153.59 83.87 0.60 46
15 02/11/2025 22:50:15 -70.01, 13.90 96.26 02/11/2025 22:49:49 -70.02, 13.89 96.25 1.17 26

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/29/2025
SNOs_Map_NPP_LANDSAT-9_20250129.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/29/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9