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: 9/21/2025
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 09/22/2025 13:03:12 -70.35, 161.04 109.84 09/22/2025 13:02:37 -70.33, 160.97 109.86 3.61 35
2 09/22/2025 13:52:40 70.20, -31.53 70.02 09/22/2025 13:53:20 70.18, -31.49 70.00 2.78 40
3 09/25/2025 04:30:10 70.55, 109.58 71.38 09/25/2025 04:28:58 70.60, 108.98 71.45 23.25 72
4 09/25/2025 05:19:43 -70.27, -83.19 108.88 09/25/2025 05:19:36 -70.28, -83.19 108.88 0.61 7
5 09/25/2025 06:09:10 70.17, 84.30 71.03 09/25/2025 06:10:20 70.18, 84.27 71.05 1.97 70
6 09/27/2025 20:46:43 70.33,-134.86 72.21 09/27/2025 20:45:53 70.35,-134.86 72.23 2.52 50
7 09/27/2025 21:36:13 -70.22, 32.62 107.89 09/27/2025 21:36:35 -70.23, 32.65 107.88 1.61 22
8 09/30/2025 12:13:31 -71.17, 174.67 105.92 09/30/2025 12:12:24 -71.23, 172.13 105.85 91.35 67
9 09/30/2025 13:03:12 70.30, -19.01 73.22 09/30/2025 13:02:52 70.32, -19.04 73.24 1.90 20
10 09/30/2025 13:52:42 -70.20, 148.47 106.87 09/30/2025 13:53:34 -70.19, 148.47 106.88 0.71 52
11 10/03/2025 04:30:13 -70.37, -70.68 105.70 10/03/2025 04:29:06 -70.37, -70.68 105.69 0.71 67
12 10/03/2025 05:19:40 70.25, 96.80 74.21 10/03/2025 05:19:49 70.24, 96.84 74.20 2.35 9
13 10/03/2025 06:09:15 -69.88, -96.10 106.16 10/03/2025 06:10:26 -69.85, -95.24 106.19 33.19 71

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/21/2025
SNOs_Map_LANDSAT-8_NPP_20250922.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/21/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP