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: 7/5/2025
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 07/05/2025 06:20:25 70.11, 81.19 47.34 07/05/2025 06:21:04 70.11, 81.16 47.33 1.21 39
2 07/05/2025 07:11:06 -69.99,-111.30 132.79 07/05/2025 07:10:34 -69.99,-111.37 132.78 2.70 32
3 07/07/2025 21:46:48 -70.80, 28.55 131.65 07/07/2025 21:47:57 -70.70, 30.28 131.83 64.33 69
4 07/07/2025 22:37:21 70.10,-163.02 47.61 07/07/2025 22:37:33 70.11,-162.95 47.61 2.91 12
5 07/07/2025 23:28:02 -69.97, 4.49 132.53 07/07/2025 23:27:04 -69.94, 4.45 132.54 3.09 58
6 07/10/2025 14:03:32 -70.16, 145.34 132.01 07/10/2025 14:04:36 -70.15, 145.34 132.03 0.91 64
7 07/10/2025 14:54:16 70.04, -47.16 47.87 07/10/2025 14:54:03 70.04, -47.17 47.88 0.47 13
8 07/10/2025 15:44:50 -69.53, 120.91 132.66 07/10/2025 15:43:39 -69.60, 119.86 132.53 41.47 71
9 07/13/2025 06:20:27 -70.14, -98.87 131.64 07/13/2025 06:21:04 -70.13, -98.80 131.67 3.35 37
10 07/13/2025 07:11:11 70.03, 68.61 48.24 07/13/2025 07:10:31 70.01, 68.68 48.23 3.35 40
11 07/15/2025 21:46:48 70.60,-151.15 49.26 07/15/2025 21:47:58 70.46,-150.06 49.06 43.31 70
12 07/15/2025 22:37:22 -70.08, 16.99 131.29 07/15/2025 22:37:33 -70.09, 17.03 131.29 1.54 11
13 07/15/2025 23:28:06 69.98,-175.54 48.61 07/15/2025 23:27:00 69.97,-175.49 48.61 1.93 66
14 07/18/2025 14:03:35 70.13, -34.63 49.22 07/18/2025 14:04:32 70.13, -34.65 49.21 0.66 57
15 07/18/2025 14:54:17 -70.02, 132.85 130.89 07/18/2025 14:54:02 -70.03, 132.84 130.88 1.16 15
16 07/18/2025 15:44:48 69.23, -58.69 48.29 07/18/2025 15:43:40 69.31, -60.51 48.45 72.06 68

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/5/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250705.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 07/05/2025 in txt file.

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