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: 5/29/2025
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 05/29/2025 13:26:33 70.29, -25.34 48.51 05/29/2025 13:27:08 70.30, -25.29 48.51 2.32 35
2 05/29/2025 14:17:15 -70.17, 142.15 131.62 05/29/2025 14:16:38 -70.18, 142.17 131.62 0.75 37
3 06/01/2025 04:52:53 -70.73, -77.59 131.41 06/01/2025 04:54:04 -70.63, -76.56 131.54 39.32 71
4 06/01/2025 05:43:29 70.22, 90.53 48.06 06/01/2025 05:43:37 70.21, 90.46 48.04 3.39 8
5 06/01/2025 06:34:12 -70.16,-102.05 132.02 06/01/2025 06:33:06 -70.14,-102.00 132.03 2.37 66
6 06/03/2025 21:09:42 -70.30, 38.88 132.20 06/03/2025 21:10:37 -70.31, 38.84 132.20 1.64 55
7 06/03/2025 22:00:26 70.21,-153.68 47.71 06/03/2025 22:00:04 70.20,-153.67 47.70 1.22 22
8 06/03/2025 22:50:54 -69.35, 14.92 133.18 06/03/2025 22:49:46 -69.43, 12.90 133.05 79.60 68
9 06/06/2025 13:26:39 -70.29, 154.66 132.49 06/06/2025 13:27:04 -70.28, 154.69 132.50 1.37 25
10 06/06/2025 14:17:22 70.15, -37.82 47.37 06/06/2025 14:16:31 70.18, -37.82 47.40 2.68 51
11 06/09/2025 04:52:52 70.36, 103.00 47.35 06/09/2025 04:54:00 70.35, 103.04 47.33 1.71 68
12 06/09/2025 05:43:34 -70.24, -89.48 132.79 06/09/2025 05:43:30 -70.24, -89.48 132.78 0.86 4
13 06/09/2025 06:34:13 69.89, 78.36 46.86 06/09/2025 06:33:01 69.91, 77.69 46.90 25.51 72
14 06/11/2025 21:09:48 70.31,-141.15 47.11 06/11/2025 21:10:27 70.29,-141.16 47.08 2.72 39
15 06/11/2025 22:00:30 -70.19, 26.36 133.03 06/11/2025 21:59:57 -70.18, 26.32 133.03 1.91 33

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/29/2025
SNOs_Map_NPP_LANDSAT-9_20250529.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/29/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9