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: 3/24/2025
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 03/26/2025 14:15:48 -70.61, 141.69 111.85 03/26/2025 14:16:58 -70.51, 142.69 111.99 38.68 70
2 03/26/2025 15:06:25 70.11, -50.21 67.62 03/26/2025 15:06:30 70.13, -50.22 67.63 2.37 5
3 03/26/2025 15:57:06 -69.99, 117.29 112.52 03/26/2025 15:56:00 -70.02, 117.26 112.49 2.93 66
4 03/29/2025 06:32:30 -70.21,-101.87 113.32 03/29/2025 06:33:31 -70.21,-101.86 113.33 0.59 61
5 03/29/2025 07:23:14 70.08, 65.64 66.53 03/29/2025 07:22:58 70.10, 65.63 66.56 2.71 16
6 03/29/2025 08:13:46 -69.49,-126.16 114.10 03/29/2025 08:12:36 -69.56,-127.49 113.98 52.50 70
7 03/31/2025 22:49:17 -70.15, 14.03 114.43 03/31/2025 22:49:57 -70.17, 13.96 114.42 3.35 40
8 03/31/2025 23:40:02 70.07,-178.54 65.48 03/31/2025 23:39:24 70.05,-178.56 65.46 2.23 38
9 04/03/2025 14:15:35 70.80, -38.54 65.24 04/03/2025 14:16:44 70.69, -37.01 65.07 57.44 69
10 04/03/2025 15:06:06 -70.15, 129.82 115.46 04/03/2025 15:06:22 -70.15, 129.83 115.47 0.99 16
11 04/03/2025 15:56:50 70.03, -62.68 64.40 04/03/2025 15:55:49 70.03, -62.70 64.41 0.76 61
12 04/06/2025 06:32:12 70.20, 78.23 63.59 04/06/2025 06:33:16 70.20, 78.17 63.58 2.27 64
13 04/06/2025 07:22:54 -70.13,-114.33 116.51 04/06/2025 07:22:46 -70.10,-114.34 116.54 3.44 8
14 04/06/2025 08:13:30 69.58, 53.79 62.92 04/06/2025 08:12:19 69.65, 52.68 63.02 43.81 71

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/24/2025
SNOs_Map_NPP_LANDSAT-9_20250324.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/24/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9