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: 3/23/2023
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 03/24/2023 23:01:31 -70.11, 10.80 111.52 03/24/2023 23:02:35 -70.13, 10.80 111.51 2.14 64
2 03/24/2023 23:52:15 70.00, 178.28 68.36 03/24/2023 23:52:02 70.03, 178.29 68.38 2.90 13
3 03/25/2023 00:42:49 -69.49, -13.64 112.20 03/25/2023 00:41:38 -69.58, -14.69 112.06 41.86 71
4 03/27/2023 15:18:23 -70.10, 126.60 112.58 03/27/2023 15:19:02 -70.07, 126.60 112.62 3.07 39
5 03/27/2023 16:09:07 69.99, -65.93 67.29 03/27/2023 16:08:29 69.97, -65.91 67.27 3.13 38
6 03/30/2023 06:44:41 70.62, 74.24 66.93 03/30/2023 06:45:51 70.53, 75.51 66.78 48.15 70
7 03/30/2023 07:35:14 -70.05,-117.55 113.69 03/30/2023 07:35:28 -70.03,-117.57 113.71 2.21 14
8 03/30/2023 08:25:58 69.95, 49.92 66.19 03/30/2023 08:24:55 69.92, 49.92 66.17 2.73 63
9 04/01/2023 23:01:22 70.11,-169.18 65.35 04/01/2023 23:02:22 70.11,-169.19 65.35 0.65 60
10 04/01/2023 23:52:04 -70.02, -1.71 114.77 04/01/2023 23:51:52 -70.01, -1.71 114.78 0.85 12
11 04/02/2023 00:42:37 69.33, 166.61 64.51 04/02/2023 00:41:28 69.39, 165.10 64.63 59.58 69
12 04/04/2023 15:18:13 70.09, -53.36 64.30 04/04/2023 15:18:46 70.10, -53.31 64.30 2.40 33
13 04/04/2023 16:08:55 -69.99, 114.11 115.82 04/04/2023 16:08:16 -70.00, 114.17 115.82 2.62 39

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/23/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230323.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/23/2023 in txt file.

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