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: 2/15/2025
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 02/17/2025 06:33:20 70.08, 78.03 82.00 02/17/2025 06:33:52 70.09, 77.95 82.00 3.10 32
2 02/17/2025 07:24:02 -69.99,-114.51 98.12 02/17/2025 07:23:22 -69.98,-114.57 98.12 2.67 40
3 02/19/2025 21:59:38 -70.62, 25.65 98.37 02/19/2025 22:00:48 -70.49, 26.78 98.56 44.14 70
4 02/19/2025 22:50:14 70.09,-166.20 81.06 02/19/2025 22:50:20 70.11,-166.13 81.07 3.43 6
5 02/19/2025 23:40:55 -69.95, 1.33 99.11 02/19/2025 23:39:51 -69.95, 1.27 99.10 2.40 64
6 02/22/2025 14:16:22 -70.18, 142.14 99.82 02/22/2025 14:17:21 -70.15, 142.16 99.86 3.02 59
7 02/22/2025 15:07:06 70.06, -50.38 80.05 02/22/2025 15:06:48 70.04, -50.35 80.03 3.19 18
8 02/22/2025 15:57:37 -69.39, 117.94 100.67 02/22/2025 15:56:27 -69.44, 116.46 100.55 58.10 70
9 02/25/2025 06:33:14 -70.11,-101.97 100.89 02/25/2025 06:33:49 -70.09,-102.04 100.91 3.18 35
10 02/25/2025 07:23:58 70.00, 65.51 78.99 02/25/2025 07:23:16 69.98, 65.45 78.98 3.31 42
11 02/27/2025 21:59:31 70.51,-154.14 78.55 02/27/2025 22:00:42 70.37,-153.38 78.36 32.37 71
12 02/27/2025 22:50:07 -70.10, 13.82 101.90 02/27/2025 22:50:15 -70.10, 13.87 101.91 1.74 8
13 02/27/2025 23:40:51 69.99,-178.70 77.98 02/27/2025 23:39:42 69.98,-178.65 77.97 2.13 69

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/15/2025
SNOs_Map_NPP_LANDSAT-9_20250215.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/15/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9