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: 10/23/2025
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 10/24/2025 12:13:43 70.42, -6.49 82.25 10/24/2025 12:12:36 70.40, -6.52 82.24 2.08 67
2 10/24/2025 13:03:13 -70.31, 160.98 97.85 10/24/2025 13:03:18 -70.30, 160.96 97.86 1.49 5
3 10/24/2025 13:52:46 69.88, -31.99 81.73 10/24/2025 13:53:56 69.88, -31.08 81.74 34.63 70
4 10/27/2025 04:30:15 70.36, 109.30 83.11 10/27/2025 04:29:33 70.38, 109.29 83.13 2.17 42
5 10/27/2025 05:19:45 -70.25, -83.22 96.99 10/27/2025 05:20:15 -70.27, -83.23 96.97 2.22 30
6 10/29/2025 19:57:07 -71.08, 58.63 95.28 10/29/2025 19:55:59 -71.14, 56.49 95.23 77.34 68
7 10/29/2025 20:46:46 70.32,-134.88 83.96 10/29/2025 20:46:29 70.31,-134.83 83.96 2.12 17
8 10/29/2025 21:36:16 -70.22, 32.60 96.14 10/29/2025 21:37:11 -70.21, 32.65 96.14 2.21 55
9 11/01/2025 12:13:48 -70.42, 173.49 95.09 11/01/2025 12:12:41 -70.41, 173.48 95.10 0.87 67
10 11/01/2025 13:03:15 70.31, -19.03 84.81 11/01/2025 13:03:25 70.31, -19.05 84.82 0.96 10
11 11/01/2025 13:52:50 -69.93, 148.07 95.56 11/01/2025 13:54:01 -69.89, 148.91 95.59 32.59 71
12 11/04/2025 04:30:18 -70.37, -70.70 94.30 11/04/2025 04:29:37 -70.37, -70.67 94.30 1.08 41
13 11/04/2025 05:19:45 70.25, 96.78 85.60 11/04/2025 05:20:21 70.26, 96.80 85.61 1.13 36

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_LANDSAT-8_NPP_20251023.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/23/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP