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: 4/8/2023
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 04/09/2023 23:01:13 -70.33, 10.52 117.47 04/09/2023 23:02:24 -70.27, 11.00 117.55 18.89 71
2 04/09/2023 23:51:53 70.01, 178.33 62.18 04/09/2023 23:51:54 70.01, 178.26 62.18 2.65 1
3 04/10/2023 00:42:35 -69.92, -14.22 117.92 04/10/2023 00:41:23 -69.95, -14.19 117.89 3.18 72
4 04/12/2023 15:17:59 -70.13, 126.61 118.66 04/12/2023 15:18:53 -70.11, 126.64 118.70 2.89 54
5 04/12/2023 16:08:43 70.02, -65.91 61.21 04/12/2023 16:08:20 70.00, -65.86 61.19 2.79 23
6 04/12/2023 16:59:10 -69.14, 102.69 119.72 04/12/2023 16:58:02 -69.23, 100.72 119.57 78.37 68
7 04/15/2023 07:34:48 -70.05,-117.48 119.72 04/15/2023 07:35:20 -70.08,-117.52 119.70 3.22 32
8 04/15/2023 08:25:32 69.94, 50.00 60.16 04/15/2023 08:24:47 69.96, 49.97 60.18 2.76 45
9 04/17/2023 23:01:02 70.44,-169.61 59.75 04/17/2023 23:02:13 70.33,-168.90 59.61 29.33 71
10 04/17/2023 23:51:38 -70.03, -1.66 120.69 04/17/2023 23:51:46 -70.06, -1.65 120.67 3.50 8
11 04/18/2023 00:42:22 69.93, 165.81 59.19 04/18/2023 00:41:13 69.95, 165.83 59.22 2.83 69
12 04/20/2023 15:17:46 70.12, -53.32 58.48 04/20/2023 15:18:42 70.12, -53.31 58.48 0.67 56
13 04/20/2023 16:08:28 -70.02, 114.14 121.63 04/20/2023 16:08:12 -70.02, 114.17 121.64 1.39 16
14 04/20/2023 16:58:59 69.23, -77.39 57.54 04/20/2023 16:57:50 69.29, -79.17 57.65 70.22 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/8/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230408.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/08/2023 in txt file.

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