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: 12/23/2025
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 12/24/2025 19:07:45 -70.69, 70.36 86.00 12/24/2025 19:06:32 -70.75, 69.74 85.93 23.67 73
2 12/24/2025 19:57:15 70.43,-122.39 93.75 12/24/2025 19:57:12 70.40,-122.40 93.72 2.86 3
3 12/24/2025 20:46:45 -70.31, 45.07 86.37 12/24/2025 20:47:54 -70.33, 45.04 86.36 2.18 69
4 12/27/2025 11:24:17 -70.50,-174.04 86.27 12/27/2025 11:23:27 -70.48,-174.06 86.29 2.94 50
5 12/27/2025 12:13:44 70.40, -6.55 93.63 12/27/2025 12:14:12 70.40, -6.63 93.63 2.79 28
6 12/30/2025 02:51:05 71.17, 135.23 94.24 12/30/2025 02:49:57 71.19, 133.21 94.31 72.53 68
7 12/30/2025 03:40:46 -70.46, -58.23 86.46 12/30/2025 03:40:27 -70.47, -58.29 86.44 2.68 19
8 12/30/2025 04:30:13 70.35, 109.26 93.44 12/30/2025 04:31:11 70.35, 109.22 93.43 1.47 58
9 01/01/2026 19:07:45 70.50,-109.92 93.38 01/01/2026 19:06:44 70.52,-109.91 93.41 2.20 61
10 01/01/2026 19:57:14 -70.44, 57.63 86.68 01/01/2026 19:57:26 -70.42, 57.56 86.70 3.50 12
11 01/01/2026 20:46:51 69.79,-135.66 92.69 01/01/2026 20:48:00 69.78,-134.13 92.64 58.77 69
12 01/04/2026 11:24:12 70.46, 5.91 93.09 01/04/2026 11:23:42 70.48, 5.92 93.12 2.17 30
13 01/04/2026 12:13:42 -70.35, 173.38 87.02 01/04/2026 12:14:24 -70.38, 173.40 87.00 2.86 42

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 12/23/2025
SNOs_Map_LANDSAT-8_NPP_20251223.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 12/23/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP