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: 6/21/2025
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 06/22/2025 13:26:46 -70.25, 154.74 133.23 06/22/2025 13:27:23 -70.25, 154.76 133.23 0.67 37
2 06/22/2025 14:17:30 70.14, -37.79 46.67 06/22/2025 14:16:50 70.15, -37.74 46.68 1.92 40
3 06/25/2025 04:53:07 70.75, 102.39 47.36 06/25/2025 04:54:17 70.66, 103.61 47.22 45.84 70
4 06/25/2025 05:43:41 -70.23, -89.46 133.19 06/25/2025 05:43:53 -70.22, -89.41 133.20 2.20 12
5 06/25/2025 06:34:25 70.13, 78.02 46.70 06/25/2025 06:33:20 70.12, 78.09 46.70 2.81 65
6 06/27/2025 21:09:54 70.27,-141.05 46.95 06/27/2025 21:10:54 70.29,-141.07 46.96 2.35 60
7 06/27/2025 22:00:36 -70.17, 26.42 133.15 06/27/2025 22:00:24 -70.18, 26.41 133.14 1.57 12
8 06/27/2025 22:51:10 69.53,-165.31 46.19 06/27/2025 22:50:00 69.58,-166.79 46.29 57.47 70
9 06/30/2025 13:26:50 70.26, -25.26 47.09 06/30/2025 13:27:25 70.23, -25.28 47.06 3.45 35
10 06/30/2025 14:17:31 -70.11, 142.29 133.07 06/30/2025 14:16:55 -70.12, 142.21 133.04 3.70 36
11 07/03/2025 04:53:11 -70.83, -77.71 132.11 07/03/2025 04:54:21 -70.70, -76.33 132.29 52.54 70
12 07/03/2025 05:43:45 70.20, 90.61 47.23 07/03/2025 05:43:55 70.21, 90.58 47.24 1.54 10
13 07/03/2025 06:34:27 -70.10,-101.92 132.87 07/03/2025 06:33:25 -70.11,-101.93 132.86 0.85 62

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/21/2025
SNOs_Map_NPP_LANDSAT-9_20250621.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/21/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9