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: 1/31/2026
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 02/02/2026 18:18:00 -71.08, 83.30 92.30 02/02/2026 18:16:50 -71.12, 81.78 92.18 55.21 70
2 02/02/2026 19:07:35 70.54,-109.87 87.19 02/02/2026 19:07:24 70.52,-109.90 87.17 2.83 11
3 02/02/2026 19:57:05 -70.43, 57.59 92.93 02/02/2026 19:58:07 -70.45, 57.52 92.92 3.44 62
4 02/05/2026 10:34:38 -70.58,-161.58 93.56 02/05/2026 10:33:37 -70.57,-161.52 93.57 2.70 61
5 02/05/2026 11:24:05 70.48, 5.91 86.33 02/05/2026 11:24:21 70.49, 5.93 86.34 1.32 16
6 02/05/2026 12:13:45 -69.82, 172.60 94.30 02/05/2026 12:14:53 -69.84, 174.25 94.36 63.32 68
7 02/08/2026 02:51:06 -70.55, -45.75 94.42 02/08/2026 02:50:33 -70.54, -45.70 94.43 2.22 33
8 02/08/2026 03:40:33 70.44, 121.74 85.47 02/08/2026 03:41:17 70.46, 121.74 85.48 2.19 44
9 02/10/2026 18:18:03 70.71, -97.26 84.88 02/10/2026 18:16:50 70.75, -97.58 84.95 12.79 73
10 02/10/2026 19:07:34 -70.55, 70.13 95.28 02/10/2026 19:07:30 -70.52, 70.12 95.31 3.38 4
11 02/10/2026 19:57:01 70.44,-122.39 84.60 02/10/2026 19:58:14 70.44,-122.45 84.60 2.30 73
12 02/13/2026 10:34:33 70.57, 18.42 83.86 02/13/2026 10:33:44 70.58, 18.47 83.88 2.56 49
13 02/13/2026 11:24:02 -70.52,-174.02 96.20 02/13/2026 11:24:27 -70.50,-174.08 96.22 3.08 25

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 1/31/2026
SNOs_Map_LANDSAT-8_NPP_20260131.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 01/31/2026 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP