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: 11/15/2025
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 11/17/2025 12:13:48 -70.43, 173.51 90.57 11/17/2025 12:12:49 -70.45, 173.45 90.54 3.11 59
2 11/17/2025 13:03:15 70.33, -19.00 89.34 11/17/2025 13:03:33 70.32, -19.04 89.34 1.55 18
3 11/17/2025 13:52:55 -69.67, 147.70 91.31 11/17/2025 13:54:04 -69.67, 149.28 91.31 60.88 69
4 11/20/2025 04:30:18 -70.42, -70.64 89.96 11/20/2025 04:29:44 -70.42, -70.72 89.95 3.06 34
5 11/20/2025 05:19:45 70.31, 96.85 89.95 11/20/2025 05:20:28 70.29, 96.79 89.93 2.73 43
6 11/22/2025 19:57:13 70.68,-122.00 90.89 11/22/2025 19:56:01 70.74,-122.77 90.95 29.22 72
7 11/22/2025 20:46:47 -70.36, 45.15 89.44 11/22/2025 20:46:37 -70.35, 45.17 89.44 0.96 10
8 11/22/2025 21:36:14 70.24,-147.37 90.46 11/22/2025 21:37:21 70.22,-147.31 90.44 3.10 67
9 11/25/2025 12:13:46 70.41, -6.53 91.15 11/25/2025 12:12:50 70.42, -6.47 91.17 2.75 56
10 11/25/2025 13:03:15 -70.36, 161.04 88.90 11/25/2025 13:03:32 -70.35, 160.97 88.91 2.82 17
11 11/25/2025 13:52:56 69.47, -32.56 90.23 11/25/2025 13:54:02 69.48, -30.41 90.24 83.81 66
12 11/28/2025 04:30:13 70.42, 109.38 91.65 11/28/2025 04:29:45 70.43, 109.30 91.66 3.09 28
13 11/28/2025 05:19:43 -70.32, -83.14 88.45 11/28/2025 05:20:26 -70.30, -83.17 88.46 2.09 43

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 11/15/2025
SNOs_Map_LANDSAT-8_NPP_20251116.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 11/15/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP