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: 3/16/2025
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 03/18/2025 14:15:56 70.18, -37.71 70.88 03/18/2025 14:17:05 70.19, -37.76 70.88 2.25 69
2 03/18/2025 15:06:38 -70.12, 129.71 109.21 03/18/2025 15:06:34 -70.13, 129.78 109.20 3.19 4
3 03/18/2025 15:57:17 69.72, -62.38 70.36 03/18/2025 15:56:05 69.80, -63.03 70.48 26.77 72
4 03/21/2025 06:32:46 70.13, 78.16 69.76 03/21/2025 06:33:30 70.15, 78.08 69.77 3.48 44
5 03/21/2025 07:23:28 -70.07,-114.42 110.32 03/21/2025 07:22:59 -70.09,-114.37 110.30 3.12 29
6 03/23/2025 21:59:07 -71.02, 25.22 110.36 03/23/2025 22:00:14 -70.93, 27.49 110.53 83.01 67
7 03/23/2025 22:49:37 70.16,-166.08 68.72 03/23/2025 22:49:53 70.16,-166.01 68.72 2.93 16
8 03/23/2025 23:40:18 -70.04, 1.42 111.42 03/23/2025 23:39:23 -70.05, 1.47 111.40 2.49 55
9 03/26/2025 14:15:41 -70.21, 142.32 112.26 03/26/2025 14:16:48 -70.23, 142.36 112.26 2.59 67
10 03/26/2025 15:06:25 70.09, -50.18 67.59 03/26/2025 15:06:15 70.12, -50.16 67.62 3.57 10
11 03/26/2025 15:57:01 -69.70, 117.73 112.83 03/26/2025 15:55:49 -69.79, 117.01 112.71 29.34 72
12 03/29/2025 06:32:31 -70.21,-101.87 113.32 03/29/2025 06:33:10 -70.19,-101.80 113.35 3.52 39
13 03/29/2025 07:23:15 70.09, 65.63 66.54 03/29/2025 07:22:37 70.07, 65.68 66.53 2.47 38

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/16/2025
SNOs_Map_NPP_LANDSAT-9_20250316.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/16/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9