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: 7/16/2023
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 07/17/2023 15:17:25 -70.06, 126.70 131.10 07/17/2023 15:18:37 -70.08, 126.70 131.09 2.20 72
2 07/17/2023 16:08:09 69.95, -65.83 48.79 07/17/2023 16:08:05 69.93, -65.87 48.77 3.18 4
3 07/17/2023 16:58:49 -69.76, 101.79 131.41 07/17/2023 16:57:35 -69.81, 101.60 131.34 9.60 74
4 07/20/2023 07:34:17 -70.01,-117.45 130.67 07/20/2023 07:35:07 -70.02,-117.50 130.67 2.10 50
5 07/20/2023 08:25:01 69.91, 50.02 49.23 07/20/2023 08:24:34 69.92, 50.00 49.24 1.61 27
6 07/20/2023 09:15:26 -68.91,-141.24 131.82 07/20/2023 09:14:20 -68.93,-143.69 131.69 98.23 66
7 07/22/2023 23:00:45 71.02,-170.59 50.91 07/22/2023 23:01:51 70.93,-167.90 50.70 98.07 66
8 07/22/2023 23:51:09 -69.97, -1.61 130.20 07/22/2023 23:51:36 -69.99, -1.65 130.18 3.15 27
9 07/23/2023 00:41:53 69.87, 165.86 49.70 07/23/2023 00:41:03 69.89, 165.85 49.73 2.35 50
10 07/25/2023 15:17:22 70.19, -53.49 50.60 07/25/2023 15:18:33 70.16, -53.16 50.53 12.96 71
11 07/25/2023 16:08:01 -69.93, 114.23 129.68 07/25/2023 16:08:05 -69.94, 114.16 129.67 2.56 4
12 07/25/2023 16:58:45 69.83, -78.31 50.23 07/25/2023 16:57:32 69.83, -78.34 50.24 1.27 73
13 07/28/2023 07:34:10 70.01, 62.58 51.00 07/28/2023 07:35:02 70.02, 62.54 51.00 2.13 52
14 07/28/2023 08:24:52 -69.90,-129.95 129.11 07/28/2023 08:24:32 -69.92,-129.98 129.09 1.85 20

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/16/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230716.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/16/2023 in txt file.

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