Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 3/9/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 03/10/2025 14:16:06 -70.19, 142.22 105.94 03/10/2025 14:17:15 -70.17, 142.19 105.97 2.38 69
2 03/10/2025 15:06:50 70.06, -50.27 73.91 03/10/2025 15:06:42 70.07, -50.32 73.92 2.08 8
3 03/10/2025 15:57:27 -69.73, 117.55 106.46 03/10/2025 15:56:15 -69.79, 116.93 106.36 24.77 72
4 03/13/2025 06:32:57 -70.15,-101.93 107.04 03/13/2025 06:33:43 -70.15,-101.96 107.05 1.08 46
5 03/13/2025 07:23:42 70.07, 65.50 72.87 03/13/2025 07:23:10 70.05, 65.54 72.84 3.14 32
6 03/15/2025 21:59:20 70.98,-154.79 72.79 03/15/2025 22:00:27 70.92,-152.57 72.64 81.01 67
7 03/15/2025 22:49:47 -70.12, 13.91 108.14 03/15/2025 22:50:09 -70.15, 13.93 108.11 3.45 22
8 03/15/2025 23:40:32 70.04,-178.66 71.77 03/15/2025 23:39:36 70.04,-178.59 71.77 3.00 56
9 03/18/2025 14:15:57 70.23, -37.78 70.93 03/18/2025 14:17:06 70.22, -37.72 70.90 2.29 69
10 03/18/2025 15:06:38 -70.10, 129.73 109.22 03/18/2025 15:06:36 -70.11, 129.76 109.21 1.54 2
11 03/18/2025 15:57:18 69.76, -62.45 70.41 03/18/2025 15:56:06 69.83, -62.99 70.51 22.30 72
12 03/21/2025 06:32:47 70.17, 78.11 69.80 03/21/2025 06:33:32 70.20, 78.13 69.82 3.27 45
13 03/21/2025 07:23:29 -70.09,-114.46 110.30 03/21/2025 07:23:02 -70.09,-114.38 110.30 3.02 27

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/9/2025
SNOs_Map_NPP_LANDSAT-9_20250309.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/09/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9