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: 3/20/2023
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 03/22/2023 06:44:50 -70.71,-105.92 109.82 03/22/2023 06:45:59 -70.64,-104.34 109.96 58.79 69
2 03/22/2023 07:35:23 70.02, 62.47 69.44 03/22/2023 07:35:35 70.05, 62.44 69.46 2.80 12
3 03/22/2023 08:26:05 -69.94,-130.08 110.67 03/22/2023 08:25:05 -69.93,-130.09 110.66 0.44 60
4 03/24/2023 23:01:31 -70.11, 10.81 111.52 03/24/2023 23:02:35 -70.14, 10.81 111.50 3.33 64
5 03/24/2023 23:52:15 70.00, 178.28 68.36 03/24/2023 23:52:02 70.03, 178.30 68.39 3.52 13
6 03/25/2023 00:42:50 -69.54, -13.72 112.14 03/25/2023 00:41:38 -69.59, -14.67 112.05 37.60 72
7 03/27/2023 15:18:23 -70.10, 126.61 112.59 03/27/2023 15:19:02 -70.10, 126.63 112.60 0.86 39
8 03/27/2023 16:09:07 69.99, -65.92 67.29 03/27/2023 16:08:29 69.98, -65.88 67.28 1.54 38
9 03/30/2023 06:44:42 70.66, 74.18 66.97 03/30/2023 06:45:51 70.56, 75.56 66.81 52.34 69
10 03/30/2023 07:35:14 -70.04,-117.53 113.70 03/30/2023 07:35:28 -70.07,-117.52 113.67 3.56 14
11 03/30/2023 08:25:58 69.93, 49.94 66.18 03/30/2023 08:24:55 69.95, 49.97 66.21 2.57 63
12 04/01/2023 23:01:22 70.09,-169.14 65.33 04/01/2023 23:02:23 70.11,-169.20 65.34 3.27 61
13 04/01/2023 23:52:04 -69.99, -1.68 114.79 04/01/2023 23:51:53 -70.01, -1.71 114.77 2.43 11
14 04/02/2023 00:42:38 69.36, 166.56 64.54 04/02/2023 00:41:29 69.39, 165.09 64.63 57.62 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/20/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230321.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/20/2023 in txt file.

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