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: 4/12/2025
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 04/14/2025 05:42:45 70.93, 89.50 61.39 04/14/2025 05:43:53 70.81, 91.34 61.22 68.67 68
2 04/14/2025 06:33:14 -70.17,-101.97 119.41 04/14/2025 06:33:33 -70.15,-102.00 119.44 3.07 19
3 04/14/2025 07:23:58 70.03, 65.56 60.43 04/14/2025 07:23:00 70.04, 65.50 60.45 2.37 58
4 04/16/2025 21:59:32 70.25,-153.64 59.72 04/16/2025 22:00:31 70.25,-153.60 59.72 1.44 59
5 04/16/2025 22:50:13 -70.12, 13.88 120.43 04/16/2025 22:50:01 -70.14, 13.87 120.40 2.76 12
6 04/16/2025 23:40:47 69.45,-177.82 58.88 04/16/2025 23:39:38 69.48,-179.39 58.95 61.39 69
7 04/19/2025 14:16:31 70.21, -37.82 58.75 04/19/2025 14:16:59 70.19, -37.80 58.73 1.78 28
8 04/19/2025 15:07:12 -70.07, 129.71 121.41 04/19/2025 15:06:29 -70.09, 129.68 121.39 2.05 43
9 04/22/2025 05:42:46 -70.35, -89.60 122.01 04/22/2025 05:43:57 -70.31, -89.39 122.06 8.94 71
10 04/22/2025 06:33:28 70.13, 78.06 57.75 04/22/2025 06:33:25 70.14, 78.01 57.77 2.61 3
11 04/22/2025 07:24:09 -69.98,-114.40 122.41 04/22/2025 07:22:56 -69.98,-114.58 122.40 6.90 73
12 04/24/2025 21:59:43 -70.22, 26.36 123.03 04/24/2025 22:00:24 -70.22, 26.36 123.04 1.00 41
13 04/24/2025 22:50:27 70.11,-166.15 56.85 04/24/2025 22:49:51 70.10,-166.16 56.84 1.42 36

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/12/2025
SNOs_Map_NPP_LANDSAT-9_20250412.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/12/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9