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: 5/10/2025
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 05/10/2025 21:09:32 70.85,-142.01 52.94 05/10/2025 21:10:41 70.78,-140.45 52.83 57.66 69
2 05/10/2025 22:00:04 -70.22, 26.32 127.73 05/10/2025 22:00:19 -70.23, 26.36 127.73 1.54 15
3 05/10/2025 22:50:48 70.12,-166.21 52.16 05/10/2025 22:49:46 70.13,-166.14 52.17 2.79 62
4 05/13/2025 13:26:18 70.27, -25.31 51.66 05/13/2025 13:27:15 70.30, -25.29 51.68 2.50 57
5 05/13/2025 14:17:00 -70.16, 142.18 128.46 05/13/2025 14:16:45 -70.18, 142.18 128.45 1.71 15
6 05/13/2025 15:07:32 69.43, -49.41 50.78 05/13/2025 15:06:23 69.47, -51.16 50.86 68.35 69
7 05/16/2025 05:43:15 70.23, 90.54 50.98 05/16/2025 05:43:42 70.22, 90.49 50.97 1.96 27
8 05/16/2025 06:33:57 -70.11,-101.97 129.15 05/16/2025 06:33:12 -70.10,-102.04 129.15 2.73 45
9 05/18/2025 21:09:29 -70.33, 38.84 129.51 05/18/2025 21:10:40 -70.33, 38.90 129.51 2.46 71
10 05/18/2025 22:00:12 70.19,-153.63 50.35 05/18/2025 22:00:08 70.17,-153.69 50.33 2.89 4
11 05/18/2025 22:50:52 -69.96, 14.03 129.90 05/18/2025 22:49:39 -70.00, 13.71 129.84 13.25 73
12 05/21/2025 13:26:26 -70.29, 154.67 130.10 05/21/2025 13:27:06 -70.26, 154.69 130.13 3.02 40
13 05/21/2025 14:17:09 70.15, -37.81 49.76 05/21/2025 14:16:33 70.15, -37.83 49.75 0.85 36

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/10/2025
SNOs_Map_NPP_LANDSAT-9_20250510.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/10/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9