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 19:57:01 71.11,-121.30 82.02 10/21/2025 19:55:53 71.14,-123.52 82.05 79.87 68
2 10/21/2025 20:46:43 -70.34, 45.16 98.75 10/21/2025 20:46:22 -70.36, 45.10 98.74 2.70 21
3 10/21/2025 21:36:11 70.19,-147.42 81.11 10/21/2025 21:37:05 70.20,-147.35 81.13 3.35 54
4 10/24/2025 12:13:41 70.38, -6.52 82.22 10/24/2025 12:12:36 70.38, -6.48 82.22 1.61 65
5 10/24/2025 13:03:11 -70.27, 160.94 97.89 10/24/2025 13:03:18 -70.27, 161.00 97.89 2.28 7
6 10/24/2025 13:52:45 69.78, -32.11 81.63 10/24/2025 13:53:55 69.80, -30.97 81.66 43.84 70
7 10/27/2025 04:30:06 70.38, 109.36 83.13 10/27/2025 04:29:32 70.36, 109.33 83.11 2.85 34
8 10/27/2025 05:19:36 -70.27, -83.16 96.98 10/27/2025 05:20:14 -70.25, -83.19 96.99 2.42 38
9 10/29/2025 19:57:02 -70.61, 57.96 95.76 10/29/2025 19:55:50 -70.71, 57.23 95.67 28.80 72
10 10/29/2025 20:46:32 70.34,-134.80 83.98 10/29/2025 20:46:29 70.34,-134.88 83.99 3.02 3
11 10/29/2025 21:36:02 -70.23, 32.67 96.12 10/29/2025 21:37:11 -70.24, 32.61 96.11 2.71 69
12 11/01/2025 12:13:31 -70.37, 173.50 95.14 11/01/2025 12:12:41 -70.39, 173.52 95.12 2.05 50
13 11/01/2025 13:02:58 70.26, -19.02 84.76 11/01/2025 13:03:25 70.29, -19.02 84.80 3.71 27

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/20/2025
SNOs_Map_LANDSAT-8_NPP_20251021.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