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: 11/8/2025
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 11/10/2025 07:10:28 70.04, 68.69 87.17 11/10/2025 07:11:09 70.06, 68.69 87.18 1.76 41
2 11/10/2025 08:01:10 -69.97,-123.88 92.90 11/10/2025 08:00:39 -69.95,-123.83 92.92 3.19 31
3 11/12/2025 22:36:55 -70.70, 16.09 91.45 11/12/2025 22:38:04 -70.57, 17.67 91.59 60.09 69
4 11/12/2025 23:27:29 70.04,-175.55 87.90 11/12/2025 23:27:39 70.02,-175.48 87.88 3.42 10
5 11/13/2025 00:18:10 -69.91, -8.04 92.23 11/13/2025 00:17:09 -69.92, -8.00 92.23 1.82 61
6 11/15/2025 14:53:43 -70.08, 132.84 91.39 11/15/2025 14:54:41 -70.06, 132.81 91.41 1.92 58
7 11/15/2025 15:44:27 69.94, -59.65 88.49 11/15/2025 15:44:08 69.95, -59.70 88.49 2.32 19
8 11/15/2025 16:34:57 -69.23, 108.71 92.22 11/15/2025 16:33:48 -69.30, 107.04 92.16 66.04 69
9 11/18/2025 07:10:43 -70.04,-111.34 90.78 11/18/2025 07:11:10 -70.01,-111.37 90.80 2.85 27
10 11/18/2025 08:01:27 69.90, 56.17 89.10 11/18/2025 08:00:37 69.90, 56.11 89.10 2.22 50
11 11/20/2025 22:37:01 70.09,-162.98 89.88 11/20/2025 22:38:08 70.08,-163.02 89.88 1.42 67
12 11/20/2025 23:27:43 -70.00, 4.46 90.20 11/20/2025 23:27:38 -69.98, 4.47 90.22 2.46 5
13 11/21/2025 00:18:21 69.55, 172.44 89.37 11/21/2025 00:17:10 69.59, 171.57 89.40 33.75 71

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/8/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251108.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 11/08/2025 in txt file.

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