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: 7/2/2025
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 07/03/2025 04:53:10 -70.82, -77.70 132.12 07/03/2025 04:54:20 -70.71, -76.31 132.28 52.05 70
2 07/03/2025 05:43:45 70.23, 90.56 47.26 07/03/2025 05:43:54 70.23, 90.62 47.26 2.01 9
3 07/03/2025 06:34:26 -70.09,-101.91 132.88 07/03/2025 06:33:24 -70.12,-101.91 132.85 3.08 62
4 07/05/2025 21:09:56 -70.30, 38.92 132.42 07/05/2025 21:10:57 -70.30, 38.96 132.43 1.23 61
5 07/05/2025 22:00:40 70.17,-153.58 47.46 07/05/2025 22:00:24 70.20,-153.55 47.48 2.48 16
6 07/05/2025 22:51:12 -69.56, 14.66 133.18 07/05/2025 22:50:02 -69.65, 13.31 133.04 53.02 70
7 07/08/2025 13:26:51 -70.25, 154.78 132.18 07/08/2025 13:27:27 -70.25, 154.77 132.18 0.65 36
8 07/08/2025 14:17:35 70.13, -37.73 47.70 07/08/2025 14:16:54 70.14, -37.74 47.72 2.19 41
9 07/11/2025 04:53:12 70.71, 102.50 48.65 07/11/2025 04:54:22 70.57, 103.49 48.46 39.67 70
10 07/11/2025 05:43:46 -70.20, -89.38 131.88 07/11/2025 05:43:57 -70.19, -89.43 131.90 2.23 11
11 07/11/2025 06:34:30 70.08, 78.12 47.99 07/11/2025 06:33:24 70.08, 78.05 48.00 2.48 66
12 07/13/2025 21:09:59 70.30,-141.07 48.60 07/13/2025 21:10:55 70.27,-141.06 48.56 3.10 56
13 07/13/2025 22:00:40 -70.17, 26.46 131.54 07/13/2025 22:00:25 -70.17, 26.43 131.53 1.49 15
14 07/13/2025 22:51:11 69.35,-165.02 47.62 07/13/2025 22:50:03 69.45,-166.93 47.80 75.37 68

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/2/2025
SNOs_Map_NPP_LANDSAT-9_20250702.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 07/02/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9