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: 3/15/2025
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 03/15/2025 21:59:20 70.98,-154.79 72.79 03/15/2025 22:00:27 70.88,-152.62 72.60 79.46 67
2 03/15/2025 22:49:47 -70.13, 13.90 108.13 03/15/2025 22:50:09 -70.11, 13.86 108.15 2.38 22
3 03/15/2025 23:40:31 69.99,-178.58 71.71 03/15/2025 23:39:36 70.00,-178.64 71.74 2.77 55
4 03/18/2025 14:15:56 70.18, -37.71 70.88 03/18/2025 14:17:05 70.18, -37.77 70.87 2.32 69
5 03/18/2025 15:06:38 -70.12, 129.71 109.21 03/18/2025 15:06:34 -70.13, 129.78 109.20 2.89 4
6 03/18/2025 15:57:17 69.71, -62.38 70.36 03/18/2025 15:56:05 69.80, -63.03 70.48 26.84 72
7 03/21/2025 06:32:47 70.19, 78.08 69.82 03/21/2025 06:33:29 70.20, 78.15 69.82 2.85 42
8 03/21/2025 07:23:28 -70.07,-114.42 110.33 03/21/2025 07:22:59 -70.08,-114.38 110.31 2.53 29
9 03/23/2025 21:59:07 -71.01, 25.23 110.36 03/23/2025 22:00:14 -70.92, 27.48 110.54 82.33 67
10 03/23/2025 22:49:37 70.15,-166.07 68.72 03/23/2025 22:49:53 70.15,-166.02 68.71 2.07 16
11 03/23/2025 23:40:18 -70.03, 1.43 111.43 03/23/2025 23:39:23 -70.04, 1.46 111.41 1.53 55
12 03/26/2025 14:15:41 -70.21, 142.33 112.27 03/26/2025 14:16:48 -70.22, 142.34 112.27 1.39 67
13 03/26/2025 15:06:25 70.08, -50.17 67.59 03/26/2025 15:06:15 70.10, -50.18 67.61 2.55 10
14 03/26/2025 15:57:01 -69.69, 117.74 112.84 03/26/2025 15:55:49 -69.78, 116.99 112.72 30.13 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/15/2025
SNOs_Map_NPP_LANDSAT-9_20250315.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/15/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9