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: 9/24/2025
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 09/25/2025 04:30:10 70.53, 109.55 71.37 09/25/2025 04:28:58 70.61, 108.96 71.46 24.00 72
2 09/25/2025 05:19:42 -70.30, -83.15 108.85 09/25/2025 05:19:36 -70.29, -83.21 108.86 2.83 6
3 09/25/2025 06:09:10 70.15, 84.28 71.02 09/25/2025 06:10:19 70.14, 84.33 71.01 2.44 69
4 09/27/2025 20:46:42 70.34,-134.84 72.22 09/27/2025 20:45:53 70.37,-134.89 72.25 3.31 49
5 09/27/2025 21:36:12 -70.23, 32.63 107.88 09/27/2025 21:36:35 -70.25, 32.61 107.86 2.30 23
6 09/30/2025 12:13:30 -71.15, 174.64 105.94 09/30/2025 12:12:23 -71.21, 172.16 105.87 88.91 67
7 09/30/2025 13:03:11 70.28, -19.04 73.20 09/30/2025 13:02:51 70.29, -19.00 73.21 1.51 20
8 09/30/2025 13:52:41 -70.17, 148.44 106.90 09/30/2025 13:53:33 -70.17, 148.50 106.90 2.57 52
9 10/03/2025 04:30:11 -70.35, -70.70 105.71 10/03/2025 04:29:05 -70.36, -70.66 105.70 1.79 66
10 10/03/2025 05:19:38 70.24, 96.79 74.20 10/03/2025 05:19:48 70.23, 96.87 74.18 3.39 10
11 10/03/2025 06:09:14 -69.81, -96.19 106.23 10/03/2025 06:10:24 -69.78, -95.15 106.25 40.33 70
12 10/05/2025 20:46:38 -70.33, 45.16 104.70 10/05/2025 20:46:03 -70.30, 45.20 104.73 3.03 35
13 10/05/2025 21:36:05 70.22,-147.35 75.20 10/05/2025 21:36:47 70.22,-147.37 75.21 0.81 42
14 10/08/2025 12:13:34 70.43, -6.43 76.41 10/08/2025 12:12:21 70.49, -6.65 76.48 11.10 73
15 10/08/2025 13:03:05 -70.27, 160.97 103.74 10/08/2025 13:03:01 -70.26, 161.03 103.75 2.73 4
16 10/08/2025 13:52:32 70.15, -31.55 76.16 10/08/2025 13:53:45 70.18, -31.53 76.19 2.92 73

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/24/2025
SNOs_Map_LANDSAT-8_NPP_20250925.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/24/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP