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: 7/19/2025
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 07/21/2025 07:10:10 70.01, 68.62 49.61 07/21/2025 07:10:37 70.01, 68.68 49.61 2.09 27
2 07/21/2025 08:00:51 -69.89,-123.87 130.51 07/21/2025 08:00:07 -69.91,-123.84 130.49 2.47 44
3 07/23/2025 22:36:26 -70.38, 16.52 129.47 07/23/2025 22:37:37 -70.30, 17.33 129.59 31.33 71
4 07/23/2025 23:27:05 69.98,-175.56 50.12 07/23/2025 23:27:08 69.97,-175.50 50.11 2.43 3
5 07/24/2025 00:17:46 -69.86, -8.05 130.00 07/24/2025 00:16:38 -69.87, -8.01 129.98 2.36 68
6 07/26/2025 14:53:14 -70.03, 132.83 129.25 07/26/2025 14:54:11 -70.03, 132.82 129.26 0.24 57
7 07/26/2025 15:43:58 69.90, -59.67 50.62 07/26/2025 15:43:38 69.92, -59.69 50.64 2.15 20
8 07/26/2025 16:34:28 -69.19, 108.68 130.12 07/26/2025 16:33:19 -69.21, 106.98 130.02 67.15 69
9 07/29/2025 07:10:09 -70.01,-111.36 128.66 07/29/2025 07:10:41 -70.02,-111.31 128.65 2.51 32
10 07/29/2025 08:00:53 69.88, 56.14 51.22 07/29/2025 08:00:08 69.91, 56.17 51.25 2.97 45
11 07/31/2025 22:36:27 70.33,-163.41 52.33 07/31/2025 22:37:38 70.26,-162.73 52.22 26.95 71
12 07/31/2025 23:27:03 -69.93, 4.53 128.08 07/31/2025 23:27:12 -69.94, 4.46 128.07 2.84 9
13 08/01/2025 00:17:48 69.86, 171.94 51.86 08/01/2025 00:16:38 69.88, 172.01 51.88 3.16 70

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/19/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250719.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/19/2025 in txt file.

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