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: 10/20/2025
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 10/21/2025 19:57:00 71.13,-121.27 82.04 10/21/2025 19:55:53 71.18,-123.58 82.08 82.93 67
2 10/21/2025 20:46:43 -70.31, 45.11 98.79 10/21/2025 20:46:21 -70.34, 45.13 98.76 3.38 22
3 10/21/2025 21:36:10 70.20,-147.40 81.12 10/21/2025 21:37:04 70.18,-147.32 81.11 3.56 54
4 10/24/2025 12:13:40 70.40, -6.50 82.23 10/24/2025 12:12:36 70.42, -6.54 82.25 2.37 64
5 10/24/2025 13:03:10 -70.29, 160.97 97.87 10/24/2025 13:03:18 -70.31, 160.95 97.85 2.35 8
6 10/24/2025 13:52:44 69.79, -32.09 81.65 10/24/2025 13:53:54 69.78, -30.94 81.65 44.02 70
7 10/27/2025 04:30:07 70.33, 109.30 83.08 10/27/2025 04:29:32 70.34, 109.35 83.09 2.27 35
8 10/27/2025 05:19:37 -70.22, -83.23 97.02 10/27/2025 05:20:14 -70.23, -83.16 97.01 2.73 37
9 10/29/2025 19:57:02 -70.61, 57.96 95.76 10/29/2025 19:55:50 -70.69, 57.25 95.68 27.89 72
10 10/29/2025 20:46:32 70.34,-134.80 83.98 10/29/2025 20:46:29 70.33,-134.86 83.98 2.46 3
11 10/29/2025 21:36:02 -70.23, 32.68 96.12 10/29/2025 21:37:11 -70.23, 32.62 96.12 2.16 69
12 11/01/2025 12:13:30 -70.36, 173.49 95.14 11/01/2025 12:12:40 -70.38, 173.52 95.12 2.44 50
13 11/01/2025 13:02:56 70.30, -18.95 84.81 11/01/2025 13:03:24 70.28, -19.01 84.79 3.05 28

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/20/2025
SNOs_Map_LANDSAT-8_NPP_20251020.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/20/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP