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: 10/28/2025
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 10/29/2025 19:57:07 -71.08, 58.62 95.28 10/29/2025 19:55:59 -71.15, 56.49 95.23 77.29 68
2 10/29/2025 20:46:46 70.33,-134.88 83.97 10/29/2025 20:46:29 70.31,-134.83 83.95 2.80 17
3 10/29/2025 21:36:16 -70.22, 32.60 96.14 10/29/2025 21:37:11 -70.21, 32.65 96.14 2.06 55
4 11/01/2025 12:13:48 -70.43, 173.50 95.08 11/01/2025 12:12:41 -70.41, 173.48 95.10 1.74 67
5 11/01/2025 13:03:15 70.32, -19.01 84.83 11/01/2025 13:03:25 70.30, -19.04 84.81 2.21 10
6 11/01/2025 13:52:50 -69.94, 148.08 95.55 11/01/2025 13:54:01 -69.89, 148.91 95.59 32.39 71
7 11/04/2025 04:30:18 -70.39, -70.67 94.28 11/04/2025 04:29:37 -70.36, -70.67 94.31 3.21 41
8 11/04/2025 05:19:45 70.28, 96.82 85.63 11/04/2025 05:20:21 70.25, 96.81 85.60 3.20 36
9 11/06/2025 19:57:10 70.87,-121.70 87.01 11/06/2025 19:56:00 70.89,-123.08 87.03 50.18 70
10 11/06/2025 20:46:48 -70.33, 45.12 93.53 11/06/2025 20:46:33 -70.33, 45.17 93.54 1.79 15
11 11/06/2025 21:36:15 70.22,-147.40 86.37 11/06/2025 21:37:17 70.22,-147.35 86.37 1.66 62
12 11/09/2025 12:13:47 70.39, -6.54 87.30 11/09/2025 12:12:47 70.39, -6.48 87.30 1.99 60
13 11/09/2025 13:03:17 -70.29, 160.95 92.80 11/09/2025 13:03:29 -70.30, 160.99 92.79 1.48 12
14 11/09/2025 13:52:53 69.63, -32.34 86.55 11/09/2025 13:54:01 69.61, -30.65 86.54 65.46 68

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/28/2025
SNOs_Map_LANDSAT-8_NPP_20251029.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/28/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP