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: 2/23/2025
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 02/25/2025 06:33:14 -70.12,-101.98 100.88 02/25/2025 06:33:47 -70.14,-101.97 100.86 2.54 33
2 02/25/2025 07:23:58 70.00, 65.51 78.99 02/25/2025 07:23:15 69.98, 65.45 78.98 2.92 43
3 02/27/2025 21:59:30 70.46,-154.06 78.50 02/27/2025 22:00:41 70.34,-153.41 78.34 27.35 71
4 02/27/2025 22:50:06 -70.06, 13.89 101.94 02/27/2025 22:50:14 -70.07, 13.82 101.94 2.38 8
5 02/27/2025 23:40:50 69.94,-178.62 77.92 02/27/2025 23:39:41 69.96,-178.68 77.95 2.90 69
6 03/02/2025 14:16:16 70.16, -37.79 77.15 03/02/2025 14:17:08 70.17, -37.77 77.15 1.71 52
7 03/02/2025 15:06:58 -70.07, 129.66 102.95 03/02/2025 15:06:38 -70.06, 129.71 102.97 2.52 20
8 03/02/2025 15:57:26 69.10, -61.62 76.02 03/02/2025 15:56:19 69.17, -63.85 76.19 88.65 67
9 03/05/2025 06:33:08 70.13, 78.04 76.08 03/05/2025 06:33:33 70.11, 78.05 76.07 1.27 25
10 03/05/2025 07:23:49 -69.99,-114.43 104.08 03/05/2025 07:23:03 -70.01,-114.47 104.05 2.29 46
11 03/07/2025 21:59:17 -70.28, 26.29 104.79 03/07/2025 22:00:29 -70.24, 26.49 104.85 8.53 72
12 03/07/2025 22:49:59 70.05,-166.06 74.96 03/07/2025 22:49:57 70.07,-166.11 74.98 2.67 2
13 03/07/2025 23:40:40 -69.92, 1.47 105.20 03/07/2025 23:39:27 -69.96, 1.37 105.14 6.01 73

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/23/2025
SNOs_Map_NPP_LANDSAT-9_20250223.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/23/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9