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: 1/14/2025
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 01/16/2025 06:33:19 70.08, 77.99 90.95 01/16/2025 06:33:52 70.10, 78.00 90.96 1.96 33
2 01/16/2025 07:24:01 -69.97,-114.52 89.18 01/16/2025 07:23:22 -69.99,-114.52 89.15 2.30 39
3 01/18/2025 21:59:40 -70.60, 25.62 89.03 01/18/2025 22:00:50 -70.48, 26.79 89.20 45.26 70
4 01/18/2025 22:50:15 70.04,-166.18 90.38 01/18/2025 22:50:23 70.05,-166.20 90.38 1.06 8
5 01/18/2025 23:40:57 -69.92, 1.31 89.76 01/18/2025 23:39:53 -69.94, 1.29 89.73 2.15 64
6 01/21/2025 14:16:28 -70.15, 142.11 90.08 01/21/2025 14:17:26 -70.13, 142.15 90.11 2.78 58
7 01/21/2025 15:07:11 70.01, -50.36 89.77 01/21/2025 15:06:53 70.02, -50.36 89.78 1.19 18
8 01/21/2025 15:57:42 -69.31, 117.98 90.98 01/21/2025 15:56:33 -69.36, 116.38 90.85 63.06 69
9 01/24/2025 06:33:22 -70.07,-102.00 90.78 01/24/2025 06:33:55 -70.07,-102.05 90.79 1.78 33
10 01/24/2025 07:24:06 69.99, 65.44 89.12 01/24/2025 07:23:22 69.96, 65.43 89.10 3.46 44
11 01/26/2025 21:59:40 70.39,-154.05 88.91 01/26/2025 22:00:51 70.30,-153.48 88.77 23.91 71
12 01/26/2025 22:50:18 -70.06, 13.79 91.46 01/26/2025 22:50:24 -70.03, 13.78 91.49 3.09 6
13 01/26/2025 23:41:01 69.92,-178.69 88.39 01/26/2025 23:39:51 69.91,-178.74 88.39 2.08 70

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/14/2025
SNOs_Map_NPP_LANDSAT-9_20250114.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/14/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9