Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/20/2023
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 09/22/2023 07:34:15 -70.82,-118.73 109.63 09/22/2023 07:35:22 -70.73,-116.47 109.75 83.20 67
2 09/22/2023 08:24:44 69.90, 50.02 69.45 09/22/2023 08:25:02 69.92, 49.99 69.46 2.17 18
3 09/22/2023 09:15:26 -69.83,-142.55 110.62 09/22/2023 09:14:32 -69.81,-142.54 110.64 1.93 54
4 09/24/2023 23:50:53 -69.97, -1.62 109.46 09/24/2023 23:52:02 -70.00, -1.66 109.44 3.00 69
5 09/25/2023 00:41:38 69.90, 165.79 70.49 09/25/2023 00:41:29 69.89, 165.83 70.47 2.31 9
6 09/25/2023 01:32:15 -69.56, -26.38 109.86 09/25/2023 01:31:02 -69.61, -26.91 109.79 21.61 73
7 09/27/2023 16:07:47 -69.93, 114.22 108.47 09/27/2023 16:08:30 -69.93, 114.14 108.47 3.04 43
8 09/27/2023 16:58:31 69.81, -78.30 71.43 09/27/2023 16:57:57 69.82, -78.37 71.44 3.24 34
9 09/30/2023 07:34:10 70.56, 61.69 73.21 09/30/2023 07:35:19 70.43, 63.11 73.06 55.09 69
10 09/30/2023 08:24:41 -69.89,-129.96 107.47 09/30/2023 08:24:57 -69.88,-130.03 107.47 2.86 16
11 09/30/2023 09:15:25 69.77, 37.52 72.43 09/30/2023 09:14:24 69.77, 37.45 72.43 2.84 61
12 10/02/2023 23:50:53 69.96, 178.39 73.63 10/02/2023 23:51:53 69.96, 178.33 73.63 2.25 60
13 10/03/2023 00:41:35 -69.86, -14.15 106.46 10/03/2023 00:41:23 -69.85, -14.17 106.47 1.31 12
14 10/03/2023 01:32:08 69.17, 154.17 72.86 10/03/2023 01:30:59 69.24, 152.64 72.94 60.90 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/20/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230920.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/20/2023 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-9