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: 1/18/2025
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 01/18/2025 21:59:40 -70.59, 25.64 89.03 01/18/2025 22:00:50 -70.47, 26.78 89.21 44.39 70
2 01/18/2025 22:50:15 70.03,-166.16 90.37 01/18/2025 22:50:23 70.04,-166.20 90.38 2.46 8
3 01/18/2025 23:40:57 -69.91, 1.32 89.76 01/18/2025 23:39:53 -69.93, 1.28 89.74 2.63 64
4 01/21/2025 14:16:27 -70.15, 142.11 90.08 01/21/2025 14:17:24 -70.15, 142.19 90.09 2.97 57
5 01/21/2025 15:07:10 70.00, -50.35 89.76 01/21/2025 15:06:52 69.99, -50.40 89.75 1.89 18
6 01/21/2025 15:57:41 -69.30, 117.98 90.98 01/21/2025 15:56:32 -69.33, 116.34 90.88 64.66 69
7 01/24/2025 06:33:22 -70.08,-102.01 90.78 01/24/2025 06:33:54 -70.06,-102.06 90.80 2.55 32
8 01/24/2025 07:24:06 69.99, 65.44 89.12 01/24/2025 07:23:20 70.01, 65.51 89.14 3.36 46
9 01/26/2025 21:59:39 70.35,-153.97 88.86 01/26/2025 22:00:50 70.25,-153.54 88.73 19.71 71
10 01/26/2025 22:50:17 -70.02, 13.85 91.50 01/26/2025 22:50:22 -70.04, 13.79 91.49 3.08 5
11 01/26/2025 23:41:01 69.93,-178.70 88.40 01/26/2025 23:39:49 69.92,-178.73 88.40 1.27 72
12 01/29/2025 14:16:31 70.14, -37.88 87.94 01/29/2025 14:17:19 70.12, -37.83 87.91 3.15 48
13 01/29/2025 15:07:13 -70.02, 129.62 92.20 01/29/2025 15:06:49 -70.02, 129.66 92.21 1.64 24

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/18/2025
SNOs_Map_NPP_LANDSAT-9_20250118.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/18/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9