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: 1/22/2025
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 01/24/2025 06:33:22 -70.09,-102.03 90.76 01/24/2025 06:33:53 -70.08,-102.04 90.78 1.79 31
2 01/24/2025 07:24:05 69.95, 65.50 89.08 01/24/2025 07:23:20 69.97, 65.46 89.11 3.21 45
3 01/26/2025 21:59:38 70.32,-153.93 88.83 01/26/2025 22:00:49 70.24,-153.55 88.72 16.76 71
4 01/26/2025 22:50:17 -70.05, 13.81 91.48 01/26/2025 22:50:20 -70.07, 13.85 91.45 3.16 3
5 01/26/2025 23:41:00 69.90,-178.66 88.37 01/26/2025 23:39:48 69.91,-178.74 88.39 3.25 72
6 01/29/2025 14:16:30 70.13, -37.86 87.92 01/29/2025 14:17:17 70.12, -37.83 87.90 1.65 47
7 01/29/2025 15:07:12 -70.01, 129.63 92.21 01/29/2025 15:06:47 -70.01, 129.65 92.22 0.71 25
8 02/01/2025 05:42:55 -70.99, -90.77 91.91 02/01/2025 05:44:02 -70.88, -88.45 92.11 85.35 67
9 02/01/2025 06:33:23 70.06, 78.02 87.11 02/01/2025 06:33:42 70.06, 77.98 87.10 1.72 19
10 02/01/2025 07:24:05 -69.94,-114.48 93.03 02/01/2025 07:23:12 -69.95,-114.54 93.02 2.18 53
11 02/03/2025 21:59:34 -70.15, 26.36 93.58 02/03/2025 22:00:39 -70.17, 26.39 93.57 2.76 65
12 02/03/2025 22:50:18 70.06,-166.20 86.32 02/03/2025 22:50:06 70.05,-166.13 86.31 2.79 12
13 02/03/2025 23:40:53 -69.57, 1.84 94.21 02/03/2025 23:39:42 -69.62, 0.90 94.11 36.94 71

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/22/2025
SNOs_Map_NPP_LANDSAT-9_20250122.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/22/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9