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: 5/16/2025
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 05/18/2025 06:19:53 70.17, 81.24 50.48 05/18/2025 06:20:41 70.20, 81.28 50.49 3.06 48
2 05/18/2025 07:10:35 -70.09,-111.32 129.62 05/18/2025 07:10:11 -70.08,-111.24 129.63 2.88 24
3 05/20/2025 21:46:23 -71.14, 28.12 129.07 05/20/2025 21:47:29 -71.06, 30.83 129.21 98.19 66
4 05/20/2025 22:36:50 70.13,-162.93 49.87 05/20/2025 22:37:11 70.14,-162.91 49.88 2.13 21
5 05/20/2025 23:27:32 -70.04, 4.51 130.23 05/20/2025 23:26:41 -70.03, 4.57 130.24 2.36 51
6 05/23/2025 14:03:03 -70.21, 145.39 130.56 05/23/2025 14:04:13 -70.23, 145.46 130.55 3.59 70
7 05/23/2025 14:53:47 70.08, -47.10 49.30 05/23/2025 14:53:41 70.07, -47.13 49.29 1.74 6
8 05/23/2025 15:44:26 -69.84, 120.58 130.96 05/23/2025 15:43:13 -69.85, 120.20 130.93 14.34 73
9 05/26/2025 06:19:59 -70.12, -98.71 131.13 05/26/2025 06:20:43 -70.14, -98.78 131.12 3.32 44
10 05/26/2025 07:10:44 70.05, 68.71 48.78 05/26/2025 07:10:10 70.03, 68.71 48.77 1.87 34
11 05/28/2025 21:46:24 70.75,-151.27 49.09 05/28/2025 21:47:33 70.63,-149.81 48.93 55.43 69
12 05/28/2025 22:36:55 -70.09, 17.09 131.60 05/28/2025 22:37:11 -70.09, 17.03 131.61 2.54 16
13 05/28/2025 23:27:40 70.02,-175.48 48.32 05/28/2025 23:26:37 70.03,-175.41 48.33 2.94 63

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 5/16/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250516.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 05/16/2025 in txt file.

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