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: 10/22/2025
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 12:13:41 70.37, -6.55 82.20 10/24/2025 12:12:36 70.40, -6.51 82.23 3.40 65
2 10/24/2025 13:03:10 -70.31, 161.00 97.85 10/24/2025 13:03:18 -70.29, 160.97 97.87 2.33 8
3 10/24/2025 13:52:45 69.77, -32.13 81.62 10/24/2025 13:53:54 69.77, -30.92 81.63 46.55 69
4 10/27/2025 04:30:07 70.38, 109.35 83.13 10/27/2025 04:29:33 70.37, 109.30 83.13 2.11 34
5 10/27/2025 05:19:37 -70.26, -83.17 96.98 10/27/2025 05:20:15 -70.27, -83.22 96.97 1.62 38
6 10/29/2025 19:57:02 -70.62, 57.97 95.75 10/29/2025 19:55:50 -70.72, 57.20 95.65 30.36 72
7 10/29/2025 20:46:33 70.29,-134.87 83.93 10/29/2025 20:46:28 70.31,-134.82 83.95 2.63 5
8 10/29/2025 21:36:03 -70.18, 32.60 96.17 10/29/2025 21:37:10 -70.20, 32.66 96.15 3.03 67
9 11/01/2025 12:13:31 -70.40, 173.53 95.11 11/01/2025 12:12:41 -70.40, 173.49 95.11 1.73 50
10 11/01/2025 13:02:58 70.28, -18.99 84.79 11/01/2025 13:03:25 70.30, -19.04 84.81 2.97 27
11 11/01/2025 13:52:44 -69.30, 147.28 96.20 11/01/2025 13:53:50 -69.30, 149.78 96.18 98.16 66
12 11/04/2025 03:40:15 71.06, 122.81 86.39 11/04/2025 03:39:07 71.09, 120.82 86.41 71.93 68
13 11/04/2025 04:29:56 -70.35, -70.63 94.32 11/04/2025 04:29:37 -70.36, -70.66 94.32 1.12 19
14 11/04/2025 05:19:23 70.24, 96.85 85.58 11/04/2025 05:20:21 70.25, 96.81 85.60 2.27 58

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/22/2025
SNOs_Map_LANDSAT-8_NPP_20251022.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/22/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP