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: 8/29/2025
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 08/30/2025 21:10:21 70.33,-141.04 61.60 08/30/2025 21:11:19 70.31,-141.04 61.57 2.47 58
2 08/30/2025 22:01:01 -70.19, 26.49 118.53 08/30/2025 22:00:48 -70.19, 26.43 118.53 2.51 13
3 08/30/2025 22:51:34 69.48,-165.13 60.75 08/30/2025 22:50:25 69.54,-166.83 60.86 66.55 69
4 09/02/2025 13:27:20 70.27, -25.19 62.51 09/02/2025 13:27:47 70.25, -25.23 62.49 2.60 27
5 09/02/2025 14:18:02 -70.18, 142.27 117.58 09/02/2025 14:17:16 -70.19, 142.32 117.57 2.24 46
6 09/05/2025 04:53:36 -70.33, -76.84 116.46 09/05/2025 04:54:48 -70.33, -76.87 116.48 1.42 72
7 09/05/2025 05:44:20 70.22, 90.65 63.44 09/05/2025 05:44:15 70.22, 90.62 63.44 1.24 5
8 09/05/2025 06:34:59 -69.96,-101.64 116.82 09/05/2025 06:33:47 -70.00,-102.06 116.77 16.75 72
9 09/07/2025 21:10:36 -70.28, 39.00 115.52 09/07/2025 21:11:16 -70.28, 38.94 115.53 2.18 40
10 09/07/2025 22:01:20 70.17,-153.52 64.38 09/07/2025 22:00:43 70.17,-153.57 64.38 1.71 37
11 09/10/2025 12:36:59 70.61, -13.09 65.81 09/10/2025 12:38:10 70.53, -12.43 65.71 25.98 71
12 09/10/2025 13:27:36 -70.23, 154.83 114.56 09/10/2025 13:27:43 -70.25, 154.80 114.55 2.29 7
13 09/10/2025 14:18:19 70.13, -37.71 65.35 09/10/2025 14:17:09 70.14, -37.71 65.36 1.01 70

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/29/2025
SNOs_Map_NPP_LANDSAT-9_20250829.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/29/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9