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: 10/16/2025
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 10/16/2025 12:13:44 -70.55, 173.70 100.47 10/16/2025 12:12:31 -70.59, 173.19 100.44 19.40 73
2 10/16/2025 13:03:14 70.29, -19.04 79.28 10/16/2025 13:03:11 70.28, -19.02 79.28 1.29 3
3 10/16/2025 13:52:44 -70.18, 148.42 100.83 10/16/2025 13:53:53 -70.17, 148.47 100.83 1.98 69
4 10/19/2025 04:30:15 -70.40, -70.64 99.65 10/19/2025 04:29:25 -70.38, -70.71 99.67 3.45 50
5 10/19/2025 05:19:43 70.24, 96.77 80.21 10/19/2025 05:20:08 70.23, 96.84 80.20 2.88 25
6 10/21/2025 19:57:00 71.15,-121.25 82.06 10/21/2025 19:55:53 71.18,-123.58 82.08 83.59 67
7 10/21/2025 20:46:43 -70.33, 45.14 98.77 10/21/2025 20:46:21 -70.33, 45.14 98.76 0.47 22
8 10/21/2025 21:36:10 70.22,-147.38 81.14 10/21/2025 21:37:05 70.24,-147.40 81.16 2.18 55
9 10/24/2025 12:13:41 70.39, -6.52 82.22 10/24/2025 12:12:36 70.41, -6.53 82.24 2.36 65
10 10/24/2025 13:03:11 -70.28, 160.96 97.88 10/24/2025 13:03:18 -70.29, 160.97 97.86 1.62 7
11 10/24/2025 13:52:45 69.78, -32.10 81.64 10/24/2025 13:53:54 69.78, -30.93 81.64 45.05 69
12 10/27/2025 04:30:08 70.36, 109.34 83.11 10/27/2025 04:29:33 70.38, 109.29 83.13 2.44 35
13 10/27/2025 05:19:38 -70.26, -83.18 96.99 10/27/2025 05:20:15 -70.27, -83.21 96.98 1.39 37
14 10/29/2025 19:57:03 -70.70, 58.09 95.67 10/29/2025 19:55:52 -70.77, 57.13 95.61 36.02 71
15 10/29/2025 20:46:35 70.31,-134.84 83.95 10/29/2025 20:46:29 70.31,-134.82 83.95 1.09 6
16 10/29/2025 21:36:05 -70.21, 32.64 96.14 10/29/2025 21:37:11 -70.19, 32.67 96.16 2.17 66

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/16/2025
SNOs_Map_LANDSAT-8_NPP_20251016.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/16/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP