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: 5/14/2025
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 05/15/2025 14:02:59 70.36, -34.80 51.27 05/15/2025 14:04:10 70.32, -34.42 51.22 14.84 71
2 05/15/2025 14:53:38 -70.11, 132.89 128.99 05/15/2025 14:53:42 -70.09, 132.89 129.01 1.98 4
3 05/15/2025 15:44:22 69.99, -59.61 50.87 05/15/2025 15:43:09 69.99, -59.61 50.88 0.60 73
4 05/18/2025 06:19:54 70.20, 81.21 50.50 05/18/2025 06:20:42 70.17, 81.25 50.47 3.05 48
5 05/18/2025 07:10:35 -70.06,-111.27 129.65 05/18/2025 07:10:12 -70.06,-111.28 129.65 0.59 23
6 05/20/2025 21:46:24 -71.16, 28.09 129.06 05/20/2025 21:47:30 -71.04, 30.79 129.24 98.38 66
7 05/20/2025 22:36:50 70.09,-162.88 49.83 05/20/2025 22:37:12 70.11,-162.95 49.85 3.55 22
8 05/20/2025 23:27:32 -70.01, 4.57 130.27 05/20/2025 23:26:42 -70.01, 4.53 130.26 1.40 50
9 05/23/2025 14:03:02 -70.18, 145.45 130.60 05/23/2025 14:04:13 -70.20, 145.41 130.58 2.90 71
10 05/23/2025 14:53:47 70.10, -47.13 49.32 05/23/2025 14:53:40 70.09, -47.10 49.30 2.03 7
11 05/23/2025 15:44:25 -69.81, 120.63 130.99 05/23/2025 15:43:12 -69.87, 120.23 130.91 16.84 73
12 05/26/2025 06:19:59 -70.14, -98.74 131.12 05/26/2025 06:20:42 -70.15, -98.76 131.11 2.00 43
13 05/26/2025 07:10:44 70.06, 68.68 48.80 05/26/2025 07:10:09 70.04, 68.72 48.78 3.04 35

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 5/14/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250514.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 05/14/2025 in txt file.

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