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: 9/14/2025
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 09/17/2025 04:30:00 -71.05, -69.64 111.22 09/17/2025 04:28:52 -71.07, -71.76 111.17 76.51 68
2 09/17/2025 05:19:39 70.30, 96.86 68.05 09/17/2025 05:19:23 70.29, 96.82 68.04 1.90 16
3 09/17/2025 06:09:08 -70.19, -95.67 112.05 09/17/2025 06:10:04 -70.18, -95.69 112.06 1.37 56
4 09/19/2025 20:46:42 -70.38, 45.21 110.85 09/19/2025 20:45:38 -70.37, 45.14 110.86 2.66 64
5 09/19/2025 21:36:10 70.22,-147.38 69.01 09/19/2025 21:36:21 70.22,-147.31 69.01 2.43 11
6 09/19/2025 22:25:46 -69.78, 19.64 111.42 09/19/2025 22:26:56 -69.74, 20.74 111.47 42.61 70
7 09/22/2025 13:03:14 -70.29, 160.96 109.90 09/22/2025 13:02:37 -70.30, 161.01 109.89 2.51 37
8 09/22/2025 13:52:41 70.18, -31.56 70.01 09/22/2025 13:53:21 70.21, -31.54 70.04 3.45 40
9 09/25/2025 04:30:11 70.56, 109.60 71.40 09/25/2025 04:28:59 70.63, 108.93 71.48 26.05 72
10 09/25/2025 05:19:44 -70.29, -83.16 108.86 09/25/2025 05:19:37 -70.30, -83.22 108.85 2.25 7
11 09/25/2025 06:09:11 70.18, 84.33 71.05 09/25/2025 06:10:20 70.16, 84.31 71.02 3.11 69
12 09/27/2025 20:46:45 70.33,-134.86 72.21 09/27/2025 20:45:53 70.32,-134.81 72.20 2.42 52
13 09/27/2025 21:36:15 -70.23, 32.63 107.88 09/27/2025 21:36:36 -70.24, 32.63 107.87 1.21 21

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/14/2025
SNOs_Map_LANDSAT-8_NPP_20250915.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/14/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP