Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/20/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 09/21/2025 23:01:30 70.37,-169.64 69.97 09/21/2025 23:02:41 70.30,-168.89 69.89 28.89 71
2 09/21/2025 23:52:07 -70.00, -1.75 110.40 09/21/2025 23:52:15 -69.97, -1.74 110.43 3.25 8
3 09/22/2025 00:42:50 69.85, 165.79 69.46 09/22/2025 00:41:42 69.87, 165.77 69.48 2.50 68
4 09/24/2025 15:18:16 70.05, -53.36 70.68 09/24/2025 15:19:14 70.06, -53.36 70.69 1.52 58
5 09/24/2025 16:08:58 -69.94, 114.12 109.42 09/24/2025 16:08:44 -69.95, 114.12 109.41 1.16 14
6 09/24/2025 16:59:30 69.21, -77.50 69.85 09/24/2025 16:58:21 69.29, -79.13 69.96 64.79 69
7 09/27/2025 07:35:08 70.00, 62.50 71.67 09/27/2025 07:35:44 70.02, 62.46 71.69 2.39 36
8 09/27/2025 08:25:50 -69.89,-130.02 108.43 09/27/2025 08:25:14 -69.91,-130.06 108.41 2.58 36
9 09/29/2025 23:01:28 -70.68, 9.91 106.62 09/29/2025 23:02:37 -70.61, 11.56 106.71 61.30 69
10 09/29/2025 23:52:01 70.01, 178.27 72.72 09/29/2025 23:52:13 70.00, 178.32 72.71 2.27 12
11 09/30/2025 00:42:43 -69.90, -14.25 107.38 09/30/2025 00:41:43 -69.90, -14.19 107.38 2.18 60
12 10/02/2025 15:18:09 -70.06, 126.67 106.21 10/02/2025 15:19:15 -70.08, 126.67 106.19 2.04 66
13 10/02/2025 16:08:53 69.97, -65.89 73.72 10/02/2025 16:08:42 69.97, -65.84 73.71 1.90 11
14 10/02/2025 16:59:29 -69.54, 102.07 106.71 10/02/2025 16:58:17 -69.59, 101.27 106.66 31.39 72

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_NOAA-20_LANDSAT-8_20250921.jpg

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-8