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: 2/27/2025
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 02/27/2025 21:59:29 70.42,-153.98 78.45 02/27/2025 22:00:41 70.32,-153.45 78.32 22.73 72
2 02/27/2025 22:50:06 -70.07, 13.87 101.93 02/27/2025 22:50:13 -70.09, 13.85 101.92 1.59 7
3 02/27/2025 23:40:51 70.00,-178.72 77.99 02/27/2025 23:39:40 69.98,-178.65 77.98 3.29 71
4 03/02/2025 14:16:16 70.17, -37.82 77.17 03/02/2025 14:17:07 70.16, -37.79 77.14 2.35 51
5 03/02/2025 15:06:57 -70.04, 129.70 102.99 03/02/2025 15:06:37 -70.04, 129.68 102.99 0.93 20
6 03/02/2025 15:57:25 69.07, -61.57 75.98 03/02/2025 15:56:19 69.10, -63.94 76.12 94.15 66
7 03/05/2025 06:33:07 70.11, 78.08 76.06 03/05/2025 06:33:31 70.10, 78.03 76.05 1.93 24
8 03/05/2025 07:23:49 -70.03,-114.48 104.04 03/05/2025 07:23:00 -70.04,-114.42 104.02 2.86 49
9 03/07/2025 21:59:15 -70.23, 26.37 104.85 03/07/2025 22:00:26 -70.20, 26.44 104.89 3.73 71
10 03/07/2025 22:49:59 70.10,-166.13 75.01 03/07/2025 22:49:53 70.09,-166.07 75.00 2.71 6
11 03/07/2025 23:40:38 -69.87, 1.55 105.25 03/07/2025 23:39:24 -69.92, 1.33 105.18 10.42 74
12 03/10/2025 14:16:05 -70.14, 142.31 106.00 03/10/2025 14:16:48 -70.14, 142.26 106.00 1.76 43
13 03/10/2025 15:06:49 70.01, -50.20 73.86 03/10/2025 15:06:15 70.02, -50.26 73.88 2.45 34

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/27/2025
SNOs_Map_NPP_LANDSAT-9_20250227.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/27/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9