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: 7/7/2025
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 07/07/2025 21:46:48 -70.81, 28.53 131.64 07/07/2025 21:47:57 -70.69, 30.26 131.84 64.81 69
2 07/07/2025 22:37:21 70.11,-163.04 47.62 07/07/2025 22:37:33 70.10,-162.97 47.60 2.79 12
3 07/07/2025 23:28:02 -69.98, 4.48 132.52 07/07/2025 23:27:03 -69.99, 4.51 132.50 1.34 59
4 07/10/2025 14:03:31 -70.12, 145.41 132.05 07/10/2025 14:04:36 -70.14, 145.33 132.04 3.67 65
5 07/10/2025 14:54:16 70.05, -47.18 47.88 07/10/2025 14:54:03 70.03, -47.18 47.87 1.87 13
6 07/10/2025 15:44:50 -69.54, 120.89 132.64 07/10/2025 15:43:39 -69.59, 119.84 132.54 41.01 71
7 07/13/2025 06:20:27 -70.10, -98.81 131.69 07/13/2025 06:21:05 -70.11, -98.82 131.69 0.94 38
8 07/13/2025 07:11:11 69.99, 68.68 48.20 07/13/2025 07:10:32 70.00, 68.67 48.22 1.55 39
9 07/15/2025 21:46:47 70.56,-151.08 49.21 07/15/2025 21:47:58 70.45,-150.07 49.05 39.33 71
10 07/15/2025 22:37:22 -70.10, 16.97 131.28 07/15/2025 22:37:33 -70.07, 17.01 131.30 2.84 11
11 07/15/2025 23:28:05 69.93,-175.48 48.56 07/15/2025 23:27:00 69.96,-175.50 48.60 3.18 65
12 07/18/2025 14:03:35 70.14, -34.65 49.23 07/18/2025 14:04:32 70.12, -34.66 49.20 2.21 57
13 07/18/2025 14:54:17 -70.04, 132.83 130.88 07/18/2025 14:54:02 -70.02, 132.83 130.89 1.62 15
14 07/18/2025 15:44:48 69.24, -58.70 48.30 07/18/2025 15:43:40 69.30, -60.52 48.44 71.58 68

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/7/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250707.jpg

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

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