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: 1/2/2025
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 01/02/2025 21:59:29 -70.69, 25.51 86.51 01/02/2025 22:00:38 -70.61, 27.03 86.64 56.67 69
2 01/02/2025 22:50:03 70.06,-166.19 92.84 01/02/2025 22:50:13 70.07,-166.12 92.84 2.64 10
3 01/02/2025 23:40:45 -69.96, 1.29 87.28 01/02/2025 23:39:43 -69.95, 1.35 87.28 2.53 62
4 01/05/2025 14:16:16 -70.12, 142.17 87.38 01/05/2025 14:17:11 -70.11, 142.19 87.40 1.93 55
5 01/05/2025 15:07:00 70.02, -50.36 92.52 01/05/2025 15:06:38 70.00, -50.32 92.49 3.25 22
6 01/05/2025 15:57:28 -69.17, 118.19 88.37 01/05/2025 15:56:20 -69.22, 116.27 88.26 76.22 68
7 01/08/2025 05:42:45 70.95, 89.29 93.17 01/08/2025 05:43:52 70.84, 91.55 92.98 83.53 67
8 01/08/2025 06:33:12 -70.05,-101.95 87.78 01/08/2025 06:33:34 -70.07,-101.95 87.77 2.04 22
9 01/08/2025 07:23:56 69.96, 65.50 92.12 01/08/2025 07:23:01 69.96, 65.54 92.12 1.33 55
10 01/10/2025 21:59:25 70.13,-153.61 91.92 01/10/2025 22:00:25 70.12,-153.60 91.90 0.91 60
11 01/10/2025 22:50:07 -70.01, 13.88 88.21 01/10/2025 22:49:55 -70.01, 13.88 88.21 0.11 12
12 01/10/2025 23:40:40 69.33,-177.82 91.09 01/10/2025 23:39:31 69.39,-179.32 91.20 59.28 69
13 01/13/2025 14:16:20 70.06, -37.74 91.42 01/13/2025 14:16:45 70.09, -37.73 91.44 2.88 25
14 01/13/2025 15:07:03 -69.99, 129.68 88.67 01/13/2025 15:06:15 -69.98, 129.75 88.68 3.29 48

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/2/2025
SNOs_Map_NPP_LANDSAT-9_20250102.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/02/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9