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: 9/13/2025
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 09/14/2025 13:03:07 70.34, -18.96 67.06 09/14/2025 13:02:23 70.33, -19.00 67.06 1.85 44
2 09/14/2025 13:52:37 -70.22, 148.51 113.05 09/14/2025 13:53:05 -70.23, 148.48 113.04 1.30 28
3 09/17/2025 04:30:00 -71.03, -69.68 111.24 09/17/2025 04:28:52 -71.09, -71.80 111.15 76.90 68
4 09/17/2025 05:19:39 70.27, 96.83 68.03 09/17/2025 05:19:22 70.26, 96.87 68.01 2.42 17
5 09/17/2025 06:09:09 -70.16, -95.70 112.07 09/17/2025 06:10:04 -70.15, -95.64 112.09 2.74 55
6 09/19/2025 20:46:43 -70.36, 45.18 110.88 09/19/2025 20:45:38 -70.34, 45.19 110.89 1.95 65
7 09/19/2025 21:36:10 70.25,-147.33 69.04 09/19/2025 21:36:22 70.24,-147.35 69.03 1.12 12
8 09/19/2025 22:25:47 -69.76, 19.61 111.44 09/19/2025 22:26:57 -69.76, 20.71 111.45 42.20 70
9 09/22/2025 13:03:13 -70.32, 161.00 109.87 09/22/2025 13:02:37 -70.33, 160.97 109.87 1.16 36
10 09/22/2025 13:52:40 70.22, -31.51 70.04 09/22/2025 13:53:21 70.23, -31.57 70.06 3.30 41
11 09/25/2025 04:30:11 70.54, 109.57 71.38 09/25/2025 04:28:59 70.65, 108.90 71.50 27.82 72
12 09/25/2025 05:19:44 -70.28, -83.19 108.88 09/25/2025 05:19:36 -70.26, -83.17 108.89 1.62 8
13 09/25/2025 06:09:11 70.16, 84.30 71.03 09/25/2025 06:10:20 70.18, 84.28 71.04 1.61 69
14 09/27/2025 20:46:45 70.31,-134.89 72.19 09/27/2025 20:45:53 70.34,-134.84 72.22 3.08 52

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 9/13/2025
SNOs_Map_LANDSAT-8_NPP_20250914.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 09/13/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP