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: 10/18/2025
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 10/19/2025 04:30:15 -70.36, -70.70 99.69 10/19/2025 04:29:24 -70.36, -70.68 99.69 0.84 51
2 10/19/2025 05:19:42 70.26, 96.79 80.22 10/19/2025 05:20:08 70.26, 96.78 80.23 0.82 26
3 10/21/2025 19:57:01 71.10,-121.32 82.01 10/21/2025 19:55:53 71.16,-123.55 82.06 80.48 68
4 10/21/2025 20:46:43 -70.34, 45.15 98.76 10/21/2025 20:46:21 -70.32, 45.16 98.78 2.06 22
5 10/21/2025 21:36:10 70.23,-147.36 81.15 10/21/2025 21:37:05 70.22,-147.38 81.14 1.30 55
6 10/24/2025 12:13:41 70.39, -6.52 82.22 10/24/2025 12:12:36 70.39, -6.51 82.23 0.72 65
7 10/24/2025 13:03:11 -70.28, 160.96 97.88 10/24/2025 13:03:18 -70.28, 160.99 97.87 1.17 7
8 10/24/2025 13:52:45 69.79, -32.10 81.64 10/24/2025 13:53:55 69.82, -30.99 81.68 42.75 70
9 10/27/2025 04:30:08 70.35, 109.32 83.10 10/27/2025 04:29:33 70.37, 109.31 83.12 1.76 35
10 10/27/2025 05:19:38 -70.25, -83.20 97.00 10/27/2025 05:20:15 -70.26, -83.20 96.98 1.13 37
11 10/29/2025 19:57:02 -70.68, 58.05 95.70 10/29/2025 19:55:50 -70.71, 57.22 95.66 30.76 72
12 10/29/2025 20:46:34 70.29,-134.88 83.93 10/29/2025 20:46:28 70.30,-134.81 83.94 2.86 6
13 10/29/2025 21:36:04 -70.18, 32.60 96.17 10/29/2025 21:37:10 -70.19, 32.68 96.16 2.90 66

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/18/2025
SNOs_Map_LANDSAT-8_NPP_20251018.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/18/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP