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: 1/12/2025
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 01/13/2025 14:16:23 70.10, -37.81 91.46 01/13/2025 14:17:22 70.09, -37.88 91.44 3.11 59
2 01/13/2025 15:07:06 -70.04, 129.60 88.62 01/13/2025 15:06:51 -70.03, 129.67 88.62 3.03 15
3 01/13/2025 15:57:38 69.31, -62.01 90.62 01/13/2025 15:56:29 69.32, -63.65 90.70 64.51 69
4 01/16/2025 06:33:20 70.10, 77.95 90.98 01/16/2025 06:33:53 70.07, 77.97 90.94 3.13 33
5 01/16/2025 07:24:01 -69.99,-114.55 89.16 01/16/2025 07:23:22 -69.97,-114.55 89.17 2.14 39
6 01/18/2025 21:59:39 -70.57, 25.68 89.06 01/18/2025 22:00:50 -70.46, 26.76 89.22 41.89 71
7 01/18/2025 22:50:15 70.06,-166.21 90.40 01/18/2025 22:50:22 70.08,-166.15 90.41 3.24 7
8 01/18/2025 23:40:57 -69.94, 1.28 89.74 01/18/2025 23:39:53 -69.92, 1.26 89.75 2.46 64
9 01/21/2025 14:16:27 -70.11, 142.17 90.12 01/21/2025 14:17:26 -70.11, 142.12 90.13 1.66 59
10 01/21/2025 15:07:11 70.03, -50.39 89.79 01/21/2025 15:06:53 69.99, -50.39 89.76 3.61 18
11 01/21/2025 15:57:42 -69.32, 117.96 90.96 01/21/2025 15:56:32 -69.40, 116.43 90.82 60.60 70
12 01/24/2025 06:33:23 -70.08,-102.02 90.77 01/24/2025 06:33:55 -70.10,-102.01 90.76 1.72 32
13 01/24/2025 07:24:07 70.00, 65.42 89.14 01/24/2025 07:23:22 69.98, 65.47 89.12 3.02 45

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/12/2025
SNOs_Map_NPP_LANDSAT-9_20250112.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/12/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9