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: 2/16/2025
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 70.09, 78.01 82.01 02/17/2025 06:33:51 70.12, 78.01 82.04 3.48 31
2 02/17/2025 07:24:02 -70.00,-114.53 98.10 02/17/2025 07:23:21 -70.01,-114.52 98.09 1.21 41
3 02/19/2025 21:59:37 -70.59, 25.71 98.41 02/19/2025 22:00:48 -70.47, 26.74 98.59 40.41 71
4 02/19/2025 22:50:14 70.11,-166.23 81.07 02/19/2025 22:50:20 70.09,-166.17 81.05 3.26 6
5 02/19/2025 23:40:55 -69.96, 1.31 99.10 02/19/2025 23:39:50 -69.98, 1.31 99.07 1.45 65
6 02/22/2025 14:16:22 -70.14, 142.20 99.86 02/22/2025 14:17:21 -70.17, 142.19 99.84 2.93 59
7 02/22/2025 15:07:06 70.03, -50.32 80.02 02/22/2025 15:06:48 70.06, -50.32 80.05 3.12 18
8 02/22/2025 15:57:37 -69.36, 117.99 100.71 02/22/2025 15:56:28 -69.40, 116.41 100.59 62.06 69
9 02/25/2025 06:33:14 -70.13,-102.00 100.86 02/25/2025 06:33:47 -70.15,-101.95 100.85 2.91 33
10 02/25/2025 07:23:58 70.01, 65.48 79.01 02/25/2025 07:23:14 70.03, 65.53 79.03 2.90 44
11 02/27/2025 21:59:30 70.48,-154.08 78.52 02/27/2025 22:00:41 70.35,-153.40 78.35 29.27 71
12 02/27/2025 22:50:06 -70.07, 13.87 101.93 02/27/2025 22:50:14 -70.08, 13.85 101.92 1.28 8
13 02/27/2025 23:40:50 69.96,-178.65 77.94 02/27/2025 23:39:41 69.97,-178.67 77.96 0.95 69

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/16/2025
SNOs_Map_NPP_LANDSAT-9_20250216.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/16/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9