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 06:44:51 -70.75,-105.98 109.78 03/22/2023 06:46:00 -70.61,-104.39 109.99 60.35 69
2 03/22/2023 07:35:24 70.06, 62.42 69.48 03/22/2023 07:35:35 70.06, 62.46 69.48 1.61 11
3 03/22/2023 08:26:06 -69.97,-130.13 110.63 03/22/2023 08:25:05 -69.95,-130.06 110.64 3.18 61
4 03/24/2023 23:01:32 -70.14, 10.76 111.48 03/24/2023 23:02:35 -70.15, 10.83 111.49 2.95 63
5 03/24/2023 23:52:15 69.98, 178.31 68.34 03/24/2023 23:52:03 69.99, 178.24 68.35 2.77 12
6 03/25/2023 00:42:50 -69.52, -13.69 112.16 03/25/2023 00:41:39 -69.55, -14.73 112.09 40.57 71
7 03/27/2023 15:18:23 -70.08, 126.64 112.61 03/27/2023 15:19:02 -70.10, 126.64 112.59 2.69 39
8 03/27/2023 16:09:06 69.97, -65.89 67.27 03/27/2023 16:08:28 69.99, -65.87 67.29 2.06 38
9 03/30/2023 06:44:41 70.64, 74.21 66.95 03/30/2023 06:45:50 70.55, 75.56 66.81 50.89 69
10 03/30/2023 07:35:14 -70.07,-117.58 113.67 03/30/2023 07:35:27 -70.07,-117.52 113.68 2.33 13
11 03/30/2023 08:25:58 69.97, 49.89 66.22 03/30/2023 08:24:54 69.95, 49.96 66.20 3.56 64
12 04/01/2023 23:01:23 70.13,-169.20 65.37 04/01/2023 23:02:22 70.15,-169.14 65.38 3.49 59
13 04/01/2023 23:52:05 -70.03, -1.73 114.76 04/01/2023 23:51:52 -70.05, -1.65 114.74 3.64 13
14 04/02/2023 00:42:38 69.34, 166.58 64.52 04/02/2023 00:41:29 69.38, 165.07 64.61 59.40 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/20/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230320.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