Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/4/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 09/06/2025 13:03:06 -70.32, 161.03 115.98 09/06/2025 13:02:06 -70.33, 161.04 115.97 0.86 60
2 09/06/2025 13:52:33 70.22, -31.47 63.94 09/06/2025 13:52:50 70.21, -31.46 63.93 1.38 17
3 09/06/2025 14:42:13 -69.56, 135.23 116.70 09/06/2025 14:43:22 -69.59, 136.79 116.70 60.52 69
4 09/09/2025 05:19:36 -70.27, -83.17 115.03 09/09/2025 05:19:06 -70.29, -83.14 115.01 2.48 30
5 09/09/2025 06:09:03 70.17, 84.33 64.88 09/09/2025 06:09:50 70.18, 84.35 64.89 1.58 47
6 09/11/2025 20:46:35 70.35,-134.81 66.04 09/11/2025 20:45:24 70.37,-134.82 66.07 2.27 71
7 09/11/2025 21:36:05 -70.24, 32.67 114.05 09/11/2025 21:36:06 -70.26, 32.67 114.03 2.32 1
8 09/11/2025 22:25:35 69.96,-160.08 65.70 09/11/2025 22:26:46 69.94,-159.53 65.66 20.83 71
9 09/14/2025 13:03:03 70.28, -19.02 67.00 09/14/2025 13:02:22 70.30, -18.95 67.02 3.56 41
10 09/14/2025 13:52:32 -70.22, 148.54 113.04 09/14/2025 13:53:05 -70.24, 148.46 113.03 3.01 33
11 09/17/2025 04:29:57 -70.72, -70.11 111.55 09/17/2025 04:28:46 -70.80, -71.31 111.45 44.66 71
12 09/17/2025 05:19:30 70.28, 96.88 68.03 09/17/2025 05:19:22 70.29, 96.82 68.04 2.22 8
13 09/17/2025 06:09:00 -70.18, -95.64 112.06 09/17/2025 06:10:04 -70.17, -95.67 112.07 1.77 64

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/4/2025
SNOs_Map_LANDSAT-8_NPP_20250905.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/04/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP