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: 9/12/2023
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 09/14/2023 07:34:14 70.77, 61.35 67.25 09/14/2023 07:35:22 70.67, 63.43 67.10 77.02 68
2 09/14/2023 08:24:42 -69.96,-130.04 113.58 09/14/2023 08:25:03 -69.95,-129.98 113.59 2.35 21
3 09/14/2023 09:15:26 69.83, 37.46 66.30 09/14/2023 09:14:30 69.85, 37.52 66.32 3.33 56
4 09/16/2023 23:50:55 70.00, 178.34 67.48 09/16/2023 23:52:04 69.98, 178.31 67.45 2.44 69
5 09/17/2023 00:41:36 -69.87, -14.14 112.65 09/17/2023 00:41:34 -69.87, -14.21 112.64 2.89 2
6 09/17/2023 01:32:16 69.53, 153.66 67.02 09/17/2023 01:31:04 69.60, 153.06 67.11 24.91 72
7 09/19/2023 16:07:50 69.97, -65.85 68.48 09/19/2023 16:08:33 69.98, -65.81 68.48 1.64 43
8 09/19/2023 16:58:31 -69.84, 101.67 111.65 09/19/2023 16:58:04 -69.82, 101.60 111.67 3.41 27
9 09/22/2023 07:34:16 -70.86,-118.80 109.59 09/22/2023 07:35:23 -70.72,-116.49 109.77 85.71 67
10 09/22/2023 08:24:44 69.90, 50.02 69.45 09/22/2023 08:25:03 69.89, 49.95 69.43 2.96 19
11 09/22/2023 09:15:26 -69.81,-142.53 110.64 09/22/2023 09:14:33 -69.79,-142.56 110.66 2.94 53
12 09/24/2023 23:50:54 -70.01, -1.68 109.43 09/24/2023 23:52:03 -70.00, -1.65 109.44 1.08 69
13 09/25/2023 00:41:38 69.89, 165.80 70.48 09/25/2023 00:41:30 69.88, 165.83 70.47 1.35 8
14 09/25/2023 01:32:16 -69.59, -26.43 109.82 09/25/2023 01:31:03 -69.62, -26.90 109.79 18.56 73

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/12/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230912.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 09/12/2023 in txt file.

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