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: 9/16/2023
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 09/16/2023 23:50:55 69.98, 178.37 67.46 09/16/2023 23:52:04 70.00, 178.33 67.47 2.57 69
2 09/17/2023 00:41:37 -69.90, -14.20 112.61 09/17/2023 00:41:34 -69.89, -14.20 112.63 1.97 3
3 09/17/2023 01:32:16 69.51, 153.69 67.00 09/17/2023 01:31:04 69.62, 153.08 67.12 26.79 72
4 09/19/2023 16:07:50 69.96, -65.83 68.46 09/19/2023 16:08:34 69.94, -65.88 68.44 2.84 44
5 09/19/2023 16:58:32 -69.88, 101.61 111.61 09/19/2023 16:58:03 -69.88, 101.68 111.60 2.75 29
6 09/22/2023 07:34:15 -70.85,-118.78 109.60 09/22/2023 07:35:22 -70.72,-116.49 109.77 85.00 67
7 09/22/2023 08:24:44 69.94, 49.96 69.49 09/22/2023 08:25:01 69.95, 50.03 69.49 3.04 17
8 09/22/2023 09:15:25 -69.81,-142.52 110.64 09/22/2023 09:14:32 -69.79,-142.56 110.66 2.21 53
9 09/24/2023 23:50:54 -70.00, -1.67 109.43 09/24/2023 23:52:03 -70.00, -1.66 109.44 0.71 69
10 09/25/2023 00:41:38 69.88, 165.82 70.47 09/25/2023 00:41:30 69.88, 165.83 70.46 0.38 8
11 09/25/2023 01:32:16 -69.59, -26.43 109.83 09/25/2023 01:31:03 -69.62, -26.91 109.79 19.13 73
12 09/27/2023 16:07:48 -69.95, 114.18 108.44 09/27/2023 16:08:31 -69.95, 114.17 108.44 0.42 43
13 09/27/2023 16:58:32 69.84, -78.34 71.46 09/27/2023 16:57:58 69.84, -78.35 71.46 0.14 34

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/16/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230916.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/16/2023 in txt file.

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