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: 3/4/2025
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 03/05/2025 06:33:08 70.14, 78.02 76.10 03/05/2025 06:33:44 70.14, 78.03 76.09 0.48 36
2 03/05/2025 07:23:49 -70.02,-114.47 104.05 03/05/2025 07:23:14 -70.03,-114.49 104.04 1.52 35
3 03/07/2025 21:59:28 -70.89, 25.31 104.15 03/07/2025 22:00:36 -70.79, 27.22 104.33 70.91 68
4 03/07/2025 22:49:59 70.08,-166.09 74.99 03/07/2025 22:50:14 70.08,-166.17 74.99 2.98 15
5 03/07/2025 23:40:41 -70.01, 1.34 105.11 03/07/2025 23:39:43 -70.03, 1.39 105.08 3.03 58
6 03/10/2025 14:16:06 -70.21, 142.19 105.92 03/10/2025 14:17:14 -70.21, 142.24 105.94 1.90 68
7 03/10/2025 15:06:50 70.08, -50.31 73.94 03/10/2025 15:06:41 70.10, -50.27 73.95 2.15 9
8 03/10/2025 15:57:27 -69.74, 117.52 106.44 03/10/2025 15:56:14 -69.83, 116.98 106.33 22.60 73
9 03/13/2025 06:32:57 -70.17,-101.96 107.02 03/13/2025 06:33:42 -70.18,-101.91 107.02 2.52 45
10 03/13/2025 07:23:41 70.04, 65.55 72.83 03/13/2025 07:23:10 70.02, 65.50 72.81 3.34 31
11 03/15/2025 21:59:21 71.00,-154.83 72.81 03/15/2025 22:00:28 70.88,-152.62 72.60 81.36 67
12 03/15/2025 22:49:48 -70.14, 13.88 108.12 03/15/2025 22:50:10 -70.12, 13.89 108.14 1.68 22
13 03/15/2025 23:40:32 70.01,-178.62 71.74 03/15/2025 23:39:37 70.01,-178.63 71.74 0.80 55

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/4/2025
SNOs_Map_NPP_LANDSAT-9_20250304.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/04/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9