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: 4/15/2025
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 04/16/2025 07:59:18 -70.04,-123.83 120.27 04/16/2025 08:00:06 -70.04,-123.77 120.28 2.00 48
2 04/16/2025 08:50:02 69.91, 43.67 59.59 04/16/2025 08:49:34 69.88, 43.65 59.56 3.42 28
3 04/18/2025 23:25:45 70.71,-176.45 59.50 04/18/2025 23:26:53 70.66,-174.63 59.40 67.08 68
4 04/19/2025 00:16:15 -69.99, -7.99 121.27 04/19/2025 00:16:33 -70.00, -7.96 121.26 1.62 18
5 04/19/2025 01:06:59 69.87, 159.50 58.60 04/19/2025 01:06:00 69.89, 159.54 58.62 2.72 59
6 04/21/2025 15:42:31 70.05, -59.64 57.89 04/21/2025 15:43:30 70.07, -59.61 57.90 2.54 59
7 04/21/2025 16:33:13 -69.95, 107.83 122.22 04/21/2025 16:33:00 -69.96, 107.87 122.22 2.03 13
8 04/21/2025 17:23:46 69.25, -83.84 57.05 04/21/2025 17:22:37 69.29, -85.38 57.13 60.77 69
9 04/24/2025 07:59:29 70.02, 56.16 56.97 04/24/2025 07:59:56 70.03, 56.23 56.97 2.97 27
10 04/24/2025 08:50:10 -69.87,-136.29 123.20 04/24/2025 08:49:27 -69.87,-136.36 123.20 2.58 43
11 04/26/2025 23:25:43 -70.12, 4.47 123.79 04/26/2025 23:26:54 -70.12, 4.61 123.80 5.11 71
12 04/27/2025 00:16:26 69.96, 172.02 56.04 04/27/2025 00:16:22 69.95, 172.01 56.03 1.35 4
13 04/27/2025 01:07:05 -69.75, -20.35 124.20 04/27/2025 01:05:52 -69.79, -20.58 124.14 10.04 73

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/15/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250415.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/15/2025 in txt file.

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