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: 3/13/2025
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 03/13/2025 06:32:57 -70.18,-101.98 107.01 03/13/2025 06:33:42 -70.16,-101.94 107.04 2.15 45
2 03/13/2025 07:23:41 70.04, 65.54 72.84 03/13/2025 07:23:09 70.06, 65.56 72.86 2.20 32
3 03/15/2025 21:59:20 70.95,-154.75 72.76 03/15/2025 22:00:28 70.85,-152.68 72.57 76.52 68
4 03/15/2025 22:49:48 -70.15, 13.86 108.10 03/15/2025 22:50:09 -70.13, 13.90 108.13 3.03 21
5 03/15/2025 23:40:32 70.02,-178.63 71.75 03/15/2025 23:39:36 70.02,-178.61 71.76 0.99 56
6 03/18/2025 14:15:57 70.21, -37.75 70.91 03/18/2025 14:17:05 70.21, -37.73 70.90 0.73 68
7 03/18/2025 15:06:38 -70.09, 129.75 109.24 03/18/2025 15:06:35 -70.10, 129.74 109.23 1.15 3
8 03/18/2025 15:57:18 69.74, -62.42 70.39 03/18/2025 15:56:06 69.77, -63.08 70.45 25.39 72
9 03/21/2025 06:32:46 70.16, 78.12 69.79 03/21/2025 06:33:29 70.17, 78.11 69.80 2.17 43
10 03/21/2025 07:23:28 -70.09,-114.45 110.30 03/21/2025 07:22:59 -70.07,-114.41 110.32 2.86 29
11 03/23/2025 21:59:07 -71.03, 25.20 110.35 03/23/2025 22:00:14 -70.91, 27.46 110.55 83.12 67
12 03/23/2025 22:49:36 70.12,-166.02 68.68 03/23/2025 22:49:53 70.14,-166.03 68.70 2.85 17
13 03/23/2025 23:40:18 -70.05, 1.41 111.41 03/23/2025 23:39:23 -70.03, 1.45 111.42 1.91 55
14 03/26/2025 14:15:42 -70.21, 142.32 112.26 03/26/2025 14:16:49 -70.23, 142.35 112.26 1.83 67
15 03/26/2025 15:06:26 70.09, -50.18 67.60 03/26/2025 15:06:16 70.11, -50.18 67.62 2.17 10
16 03/26/2025 15:57:02 -69.70, 117.72 112.83 03/26/2025 15:55:50 -69.78, 117.00 112.71 29.39 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/13/2025
SNOs_Map_NPP_LANDSAT-9_20250313.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/13/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9