Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/20/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 04/21/2025 15:42:31 70.06, -59.66 57.91 04/21/2025 15:43:30 70.07, -59.60 57.91 2.66 59
2 04/21/2025 16:33:13 -69.97, 107.80 122.20 04/21/2025 16:33:00 -69.96, 107.87 122.22 3.22 13
3 04/21/2025 17:23:46 69.27, -83.86 57.06 04/21/2025 17:22:37 69.30, -85.38 57.14 59.58 69
4 04/24/2025 07:59:28 69.99, 56.22 56.93 04/24/2025 07:59:57 70.01, 56.19 56.95 2.56 29
5 04/24/2025 08:50:10 -69.89,-136.32 123.18 04/24/2025 08:49:27 -69.89,-136.33 123.17 0.58 43
6 04/26/2025 23:25:43 -70.13, 4.44 123.77 04/26/2025 23:26:55 -70.12, 4.60 123.80 6.17 72
7 04/27/2025 00:16:26 69.97, 172.00 56.05 04/27/2025 00:16:23 69.96, 172.01 56.03 2.11 3
8 04/27/2025 01:07:07 -69.82, -20.46 124.12 04/27/2025 01:05:53 -69.85, -20.51 124.09 3.49 74
9 04/29/2025 15:42:39 -70.02, 120.37 124.73 04/29/2025 15:43:21 -70.03, 120.37 124.73 1.25 42
10 04/29/2025 16:33:23 69.92, -72.16 55.16 04/29/2025 16:32:48 69.92, -72.15 55.16 0.57 35
11 05/02/2025 07:09:00 70.45, 68.15 54.92 05/02/2025 07:10:10 70.34, 69.07 54.78 36.78 70
12 05/02/2025 07:59:35 -69.97,-123.79 125.59 05/02/2025 07:59:45 -69.96,-123.84 125.61 2.44 10
13 05/02/2025 08:50:19 69.88, 43.67 54.30 05/02/2025 08:49:11 69.90, 43.72 54.32 3.19 68

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/20/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250420.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/20/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-9