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: 7/17/2023
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 07/20/2023 07:34:17 -70.01,-117.45 130.67 07/20/2023 07:35:07 -70.02,-117.50 130.67 2.03 50
2 07/20/2023 08:25:01 69.91, 50.02 49.22 07/20/2023 08:24:34 69.92, 50.00 49.24 1.55 27
3 07/20/2023 09:15:26 -68.91,-141.24 131.82 07/20/2023 09:14:19 -68.98,-143.63 131.64 95.72 67
4 07/22/2023 23:00:45 71.02,-170.60 50.91 07/22/2023 23:01:51 70.92,-167.91 50.70 97.93 66
5 07/22/2023 23:51:09 -69.97, -1.61 130.19 07/22/2023 23:51:36 -69.98, -1.66 130.19 2.23 27
6 07/23/2023 00:41:53 69.87, 165.85 49.71 07/23/2023 00:41:03 69.88, 165.84 49.72 1.28 50
7 07/25/2023 15:17:22 70.20, -53.50 50.60 07/25/2023 15:18:33 70.14, -53.18 50.52 13.67 71
8 07/25/2023 16:08:01 -69.94, 114.22 129.67 07/25/2023 16:08:04 -69.98, 114.22 129.64 3.71 3
9 07/25/2023 16:58:44 69.79, -78.24 50.18 07/25/2023 16:57:32 69.81, -78.37 50.22 5.47 72
10 07/28/2023 07:34:10 70.02, 62.56 51.01 07/28/2023 07:35:01 70.05, 62.58 51.03 2.92 51
11 07/28/2023 08:24:52 -69.92,-129.97 129.09 07/28/2023 08:24:31 -69.94,-129.94 129.07 2.67 21
12 07/28/2023 09:15:20 68.97, 38.70 49.92 07/28/2023 09:14:13 69.00, 36.44 50.06 90.38 67
13 07/30/2023 23:51:02 70.01, 178.36 51.63 07/30/2023 23:51:29 69.98, 178.38 51.60 2.94 27
14 07/31/2023 00:41:44 -69.90, -14.16 128.48 07/31/2023 00:40:59 -69.88, -14.14 128.50 2.92 45

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/17/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230718.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/17/2023 in txt file.

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