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: 9/18/2025
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 09/19/2025 20:46:43 -70.35, 45.16 110.88 09/19/2025 20:45:38 -70.34, 45.19 110.89 1.41 65
2 09/19/2025 21:36:10 70.25,-147.34 69.04 09/19/2025 21:36:22 70.24,-147.34 69.03 1.30 12
3 09/19/2025 22:25:47 -69.75, 19.60 111.45 09/19/2025 22:26:57 -69.76, 20.71 111.45 42.76 70
4 09/22/2025 13:03:13 -70.30, 160.97 109.89 09/22/2025 13:02:37 -70.33, 160.97 109.86 2.88 36
5 09/22/2025 13:52:40 70.20, -31.53 70.02 09/22/2025 13:53:20 70.18, -31.49 70.00 2.83 40
6 09/25/2025 04:30:10 70.56, 109.61 71.40 09/25/2025 04:28:58 70.60, 108.98 71.45 23.48 72
7 09/25/2025 05:19:43 -70.29, -83.16 108.86 09/25/2025 05:19:36 -70.27, -83.18 108.88 2.58 7
8 09/25/2025 06:09:10 70.19, 84.33 71.05 09/25/2025 06:10:20 70.18, 84.28 71.04 2.23 70
9 09/27/2025 20:46:44 70.31,-134.88 72.19 09/27/2025 20:45:53 70.34,-134.84 72.22 3.34 51
10 09/27/2025 21:36:14 -70.21, 32.60 107.90 09/27/2025 21:36:35 -70.22, 32.67 107.89 2.74 21
11 09/30/2025 12:13:32 -71.19, 174.69 105.90 09/30/2025 12:12:25 -71.27, 172.07 105.81 94.15 67
12 09/30/2025 13:03:13 70.32, -18.99 73.24 09/30/2025 13:02:52 70.30, -19.02 73.22 2.50 21
13 09/30/2025 13:52:43 -70.22, 148.49 106.86 09/30/2025 13:53:35 -70.22, 148.42 106.85 2.72 52

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/18/2025
SNOs_Map_LANDSAT-8_NPP_20250919.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/18/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP