Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/19/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 08/19/2025 14:53:14 70.04, -47.13 57.45 08/19/2025 14:54:24 70.03, -47.20 57.44 2.43 70
2 08/19/2025 15:43:56 -69.95, 120.31 122.63 08/19/2025 15:43:53 -69.97, 120.35 122.61 2.56 3
3 08/19/2025 16:34:36 69.62, -71.89 57.04 08/19/2025 16:33:24 69.65, -72.45 57.10 22.08 72
4 08/22/2025 07:10:07 70.01, 68.68 58.31 08/22/2025 07:10:53 70.02, 68.66 58.31 1.04 46
5 08/22/2025 08:00:49 -69.92,-123.86 121.77 08/22/2025 08:00:23 -69.90,-123.86 121.79 1.98 26
6 08/24/2025 23:27:01 69.99,-175.51 59.20 08/24/2025 23:27:23 69.98,-175.50 59.19 0.54 22
7 08/25/2025 00:17:43 -69.89, -8.05 120.90 08/25/2025 00:16:53 -69.87, -8.02 120.91 2.35 50
8 08/27/2025 14:53:13 -70.18, 132.67 119.69 08/27/2025 14:54:24 -70.15, 132.98 119.74 11.92 71
9 08/27/2025 15:43:54 69.92, -59.62 60.05 08/27/2025 15:43:53 69.93, -59.69 60.07 3.22 1
10 08/27/2025 16:34:36 -69.82, 107.85 120.05 08/27/2025 16:33:23 -69.83, 107.80 120.03 2.25 73
11 08/30/2025 07:10:05 -70.05,-111.36 118.88 08/30/2025 07:10:55 -70.04,-111.31 118.91 2.94 50
12 08/30/2025 08:00:48 69.90, 56.18 60.98 08/30/2025 08:00:22 69.92, 56.18 61.00 2.44 26
13 08/30/2025 08:51:14 -68.95,-135.13 120.00 08/30/2025 08:50:07 -68.99,-137.43 119.88 91.78 67
14 09/01/2025 23:26:57 -69.99, 4.52 117.99 09/01/2025 23:27:23 -70.01, 4.55 117.97 3.00 26
15 09/02/2025 00:17:41 69.89, 171.97 61.93 09/02/2025 00:16:50 69.90, 172.03 61.94 2.40 51

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/19/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250819.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 08/19/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-9