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: 8/31/2025
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 09/02/2025 13:27:21 70.29, -25.22 62.52 09/02/2025 13:27:52 70.29, -25.20 62.52 0.48 31
2 09/02/2025 14:18:02 -70.20, 142.24 117.56 09/02/2025 14:17:21 -70.17, 142.27 117.59 3.07 41
3 09/05/2025 04:53:41 -70.62, -77.30 116.17 09/05/2025 04:54:52 -70.53, -76.62 116.28 27.15 71
4 09/05/2025 05:44:20 70.24, 90.61 63.46 09/05/2025 05:44:22 70.26, 90.64 63.48 2.44 2
5 09/05/2025 06:35:02 -70.14,-101.92 116.63 09/05/2025 06:33:52 -70.15,-101.89 116.62 1.31 70
6 09/07/2025 21:10:36 -70.31, 38.95 115.49 09/07/2025 21:11:26 -70.30, 38.94 115.50 1.05 50
7 09/07/2025 22:01:20 70.20,-153.57 64.42 09/07/2025 22:00:53 70.20,-153.57 64.41 0.45 27
8 09/07/2025 22:51:45 -69.20, 15.23 116.60 09/07/2025 22:50:39 -69.21, 12.71 116.54 99.49 66
9 09/10/2025 12:37:07 71.07, -13.85 66.29 09/10/2025 12:38:15 70.97, -11.81 66.15 74.72 68
10 09/10/2025 13:27:36 -70.28, 154.76 114.52 09/10/2025 13:27:56 -70.26, 154.76 114.53 1.70 20
11 09/10/2025 14:18:20 70.18, -37.77 65.40 09/10/2025 14:17:23 70.16, -37.75 65.38 2.42 57
12 09/13/2025 04:53:53 70.32, 103.14 66.53 09/13/2025 04:54:55 70.35, 103.13 66.55 3.04 62
13 09/13/2025 05:44:36 -70.26, -89.45 113.52 09/13/2025 05:44:25 -70.24, -89.39 113.54 2.73 11
14 09/13/2025 06:35:09 69.63, 78.81 65.86 09/13/2025 06:33:59 69.69, 77.48 65.94 51.93 70

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/31/2025
SNOs_Map_NPP_LANDSAT-9_20250901.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/31/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9