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: 11/19/2025
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 11/20/2025 22:37:00 70.10,-163.00 89.90 11/20/2025 22:38:04 70.12,-162.96 89.92 3.00 64
2 11/20/2025 23:27:41 -69.98, 4.50 90.22 11/20/2025 23:27:34 -70.01, 4.51 90.20 3.33 7
3 11/21/2025 00:18:18 69.46, 172.57 89.27 11/21/2025 00:17:08 69.51, 171.48 89.32 42.95 70
4 11/23/2025 14:53:59 70.03, -47.14 90.40 11/23/2025 14:54:32 70.02, -47.21 90.39 2.69 33
5 11/23/2025 15:44:41 -69.96, 120.28 89.67 11/23/2025 15:44:01 -69.96, 120.35 89.67 2.46 40
6 11/26/2025 06:20:18 -70.32, -99.14 88.80 11/26/2025 06:21:29 -70.23, -98.66 88.89 20.71 71
7 11/26/2025 07:10:59 70.03, 68.62 90.92 11/26/2025 07:10:58 70.01, 68.67 90.90 2.96 1
8 11/26/2025 08:01:40 -69.90,-123.86 89.21 11/26/2025 08:00:28 -69.90,-123.85 89.21 0.48 72
9 11/28/2025 22:37:13 -70.06, 17.03 88.59 11/28/2025 22:37:57 -70.08, 17.02 88.56 2.55 44
10 11/28/2025 23:27:58 69.98,-175.54 91.35 11/28/2025 23:27:24 69.96,-175.50 91.33 2.19 34
11 12/01/2025 14:03:37 70.51, -35.24 92.31 12/01/2025 14:04:47 70.39, -34.26 92.18 38.99 70
12 12/01/2025 14:54:11 -70.01, 132.87 88.20 12/01/2025 14:54:22 -70.01, 132.83 88.20 1.68 11
13 12/01/2025 15:44:55 69.88, -59.63 91.68 12/01/2025 15:43:49 69.90, -59.69 91.69 2.98 66

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/19/2025
SNOs_Map_NOAA-20_LANDSAT-9_20251120.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 11/19/2025 in txt file.

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