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: 1/27/2025
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 01/29/2025 14:16:29 70.09, -37.80 87.88 01/29/2025 14:17:17 70.11, -37.84 87.90 2.74 48
2 01/29/2025 15:07:11 -69.98, 129.68 92.25 01/29/2025 15:06:47 -70.00, 129.63 92.23 2.79 24
3 02/01/2025 05:42:56 -71.00, -90.80 91.89 02/01/2025 05:44:03 -70.89, -88.44 92.11 86.54 67
4 02/01/2025 06:33:24 70.07, 78.01 87.12 02/01/2025 06:33:43 70.07, 77.99 87.11 0.67 19
5 02/01/2025 07:24:06 -69.96,-114.51 93.02 02/01/2025 07:23:13 -69.96,-114.53 93.01 0.97 53
6 02/03/2025 21:59:34 -70.15, 26.34 93.57 02/03/2025 22:00:40 -70.14, 26.35 93.59 1.03 66
7 02/03/2025 22:50:17 70.01,-166.12 86.27 02/03/2025 22:50:07 70.03,-166.17 86.30 2.97 10
8 02/03/2025 23:40:53 -69.58, 1.83 94.20 02/03/2025 23:39:42 -69.65, 0.94 94.08 35.53 71
9 02/06/2025 14:16:28 -70.10, 142.20 94.44 02/06/2025 14:17:04 -70.12, 142.21 94.43 1.75 36
10 02/06/2025 15:07:12 70.01, -50.35 85.46 02/06/2025 15:06:31 70.00, -50.31 85.45 2.08 41
11 02/09/2025 05:42:44 70.39, 90.21 85.04 02/09/2025 05:43:55 70.31, 90.77 84.92 22.40 71
12 02/09/2025 06:33:22 -70.06,-101.96 95.33 02/09/2025 06:33:28 -70.04,-101.99 95.35 2.55 6
13 02/09/2025 07:24:05 69.92, 65.56 84.52 02/09/2025 07:22:55 69.92, 65.49 84.53 2.77 70

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/27/2025
SNOs_Map_NPP_LANDSAT-9_20250127.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/27/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9