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: 8/10/2023
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 08/13/2023 07:34:00 70.50, 61.87 55.81 08/13/2023 07:35:10 70.37, 63.01 55.62 45.06 70
2 08/13/2023 08:24:33 -69.94,-129.94 124.78 08/13/2023 08:24:46 -69.92,-130.00 124.80 3.21 13
3 08/13/2023 09:15:17 69.83, 37.54 55.12 08/13/2023 09:14:13 69.82, 37.51 55.12 1.31 64
4 08/15/2023 23:50:42 70.01, 178.43 56.11 08/15/2023 23:51:45 70.02, 178.40 56.11 2.11 63
5 08/16/2023 00:41:24 -69.92, -14.12 123.98 08/16/2023 00:41:15 -69.91, -14.13 123.99 0.73 9
6 08/16/2023 01:31:59 69.38, 153.97 55.47 08/16/2023 01:30:48 69.42, 152.85 55.56 44.14 71
7 08/18/2023 16:07:32 69.99, -65.77 56.94 08/18/2023 16:08:13 69.99, -65.76 56.93 0.65 41
8 08/18/2023 16:58:14 -69.90, 101.69 123.15 08/18/2023 16:57:43 -69.88, 101.72 123.17 2.76 31
9 08/21/2023 07:33:54 -70.88,-118.69 121.27 08/21/2023 07:35:01 -70.80,-116.32 121.43 86.87 67
10 08/21/2023 08:24:22 69.93, 50.11 57.75 08/21/2023 08:24:42 69.92, 50.04 57.74 2.84 20
11 08/21/2023 09:15:04 -69.84,-142.43 122.34 08/21/2023 09:14:12 -69.82,-142.48 122.36 2.65 52
12 08/23/2023 23:50:30 -70.09, -1.65 121.21 08/23/2023 23:51:42 -70.06, -1.52 121.25 5.46 72
13 08/24/2023 00:41:13 69.93, 165.90 58.64 08/24/2023 00:41:09 69.95, 165.96 58.66 3.30 4
14 08/24/2023 01:31:53 -69.73, -26.49 121.56 08/24/2023 01:30:41 -69.74, -26.70 121.54 8.32 72

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/10/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230811.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/10/2023 in txt file.

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