Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/27/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 07/29/2025 06:20:31 -70.11, -98.83 128.57 07/29/2025 06:21:13 -70.12, -98.82 128.57 1.12 42
2 07/29/2025 07:11:15 70.01, 68.63 51.34 07/29/2025 07:10:40 70.01, 68.67 51.34 1.83 35
3 07/31/2025 21:46:54 70.77,-151.43 52.78 07/31/2025 21:48:03 70.65,-149.78 52.59 61.79 69
4 07/31/2025 22:37:25 -70.08, 16.99 127.95 07/31/2025 22:37:42 -70.05, 16.97 127.98 2.65 17
5 07/31/2025 23:28:08 69.93,-175.48 51.91 07/31/2025 23:27:09 69.94,-175.54 51.93 2.52 59
6 08/03/2025 14:03:37 70.12, -34.62 52.77 08/03/2025 14:04:41 70.13, -34.67 52.78 2.31 64
7 08/03/2025 14:54:20 -70.05, 132.80 127.29 08/03/2025 14:54:11 -70.02, 132.81 127.32 2.82 9
8 08/03/2025 15:44:55 69.48, -59.06 52.13 08/03/2025 15:43:45 69.52, -60.23 52.22 45.90 70
9 08/06/2025 06:20:32 70.10, 81.18 53.48 08/06/2025 06:21:10 70.08, 81.14 53.45 2.74 38
10 08/06/2025 07:11:14 -69.97,-111.32 126.65 08/06/2025 07:10:40 -69.97,-111.37 126.64 2.00 34
11 08/08/2025 21:46:54 -70.74, 28.63 125.11 08/08/2025 21:48:03 -70.61, 30.17 125.30 58.61 69
12 08/08/2025 22:37:27 70.08,-163.03 54.22 08/08/2025 22:37:38 70.06,-162.99 54.19 3.20 11
13 08/08/2025 23:28:09 -69.95, 4.48 125.92 08/08/2025 23:27:08 -69.96, 4.50 125.90 1.06 61

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/27/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250727.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/27/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-8