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: 6/9/2025
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 06/11/2025 21:09:47 70.27,-141.08 47.07 06/11/2025 21:10:44 70.29,-141.06 47.07 1.62 57
2 06/11/2025 22:00:29 -70.16, 26.41 133.05 06/11/2025 22:00:14 -70.17, 26.41 133.04 1.40 15
3 06/11/2025 22:51:01 69.43,-165.19 46.19 06/11/2025 22:49:52 69.47,-166.93 46.28 67.93 69
4 06/14/2025 13:26:43 70.23, -25.25 46.89 06/14/2025 13:27:17 70.21, -25.29 46.86 2.58 34
5 06/14/2025 14:17:25 -70.12, 142.24 133.24 06/14/2025 14:16:47 -70.11, 142.19 133.25 2.65 38
6 06/17/2025 04:53:04 -70.81, -77.72 132.60 06/17/2025 04:54:13 -70.72, -76.30 132.74 52.76 69
7 06/17/2025 05:43:38 70.20, 90.58 46.76 06/17/2025 05:43:48 70.18, 90.54 46.74 2.32 10
8 06/17/2025 06:34:20 -70.08,-101.93 133.37 06/17/2025 06:33:18 -70.08,-101.98 133.37 2.09 62
9 06/19/2025 21:09:51 -70.31, 38.87 133.17 06/19/2025 21:10:52 -70.30, 38.94 133.20 3.03 61
10 06/19/2025 22:00:34 70.17,-153.59 46.68 06/19/2025 22:00:19 70.19,-153.58 46.70 2.60 15
11 06/19/2025 22:51:07 -69.58, 14.61 133.93 06/19/2025 22:49:57 -69.65, 13.30 133.82 51.24 70
12 06/22/2025 13:26:46 -70.23, 154.77 133.25 06/22/2025 13:27:24 -70.24, 154.72 133.25 1.68 38
13 06/22/2025 14:17:30 70.14, -37.78 46.66 06/22/2025 14:16:51 70.12, -37.79 46.65 1.81 39

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/9/2025
SNOs_Map_NPP_LANDSAT-9_20250610.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/09/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9