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: 8/9/2025
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 08/10/2025 21:35:58 -70.31, 32.77 125.01 08/10/2025 21:35:20 -70.30, 32.70 125.02 2.95 38
2 08/10/2025 22:25:26 70.15,-159.81 54.85 08/10/2025 22:26:04 70.15,-159.77 54.85 1.58 38
3 08/13/2025 13:02:51 70.76, -18.32 56.22 08/13/2025 13:01:41 70.85, -19.74 56.37 53.08 70
4 08/13/2025 13:52:28 -70.27, 148.59 124.25 08/13/2025 13:52:13 -70.26, 148.54 124.25 2.01 15
5 08/13/2025 14:41:56 70.11, -44.00 55.61 08/13/2025 14:42:57 70.12, -43.94 55.62 2.75 61
6 08/16/2025 05:19:29 70.31, 96.90 56.62 08/16/2025 05:18:25 70.30, 96.93 56.62 1.68 64
7 08/16/2025 06:08:59 -70.21, -95.62 123.47 08/16/2025 06:09:07 -70.23, -95.63 123.45 2.56 8
8 08/16/2025 06:58:34 69.66, 71.25 56.02 08/16/2025 06:59:43 69.68, 72.51 55.99 48.74 69
9 08/18/2025 21:35:59 70.29,-147.25 57.45 08/18/2025 21:35:19 70.29,-147.26 57.46 0.43 40
10 08/18/2025 22:25:29 -70.19, 20.23 122.64 08/18/2025 22:26:01 -70.21, 20.19 122.62 2.81 32
11 08/21/2025 13:02:50 -71.01, 162.08 120.98 08/21/2025 13:01:42 -71.07, 159.94 120.86 77.51 68
12 08/21/2025 13:52:29 70.25, -31.43 58.29 08/21/2025 13:52:13 70.27, -31.45 58.32 2.94 16
13 08/21/2025 14:41:59 -70.15, 136.05 121.80 08/21/2025 14:42:54 -70.14, 136.08 121.81 1.52 55

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 8/9/2025
SNOs_Map_LANDSAT-8_NPP_20250809.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 08/09/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP