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 -70.35, 10.49 117.45 04/09/2023 23:02:24 -70.26, 10.97 117.57 20.56 71
2 04/09/2023 23:51:53 70.02, 178.30 62.20 04/09/2023 23:51:53 70.05, 178.31 62.22 2.41 0
3 04/10/2023 00:42:35 -69.94, -14.25 117.90 04/10/2023 00:41:23 -69.93, -14.21 117.91 1.69 72
4 04/12/2023 15:17:59 -70.10, 126.67 118.70 04/12/2023 15:18:54 -70.09, 126.62 118.71 1.81 55
5 04/12/2023 16:08:43 69.99, -65.85 61.17 04/12/2023 16:08:21 69.99, -65.88 61.18 1.18 22
6 04/12/2023 16:59:11 -69.16, 102.67 119.70 04/12/2023 16:58:03 -69.22, 100.70 119.58 77.83 68
7 04/15/2023 07:34:48 -70.07,-117.50 119.71 04/15/2023 07:35:20 -70.07,-117.54 119.71 1.39 32
8 04/15/2023 08:25:32 69.96, 49.97 60.17 04/15/2023 08:24:47 69.96, 49.95 60.17 0.75 45
9 04/17/2023 23:01:02 70.46,-169.64 59.76 04/17/2023 23:02:13 70.33,-168.90 59.61 30.70 71
10 04/17/2023 23:51:38 -70.05, -1.68 120.68 04/17/2023 23:51:46 -70.06, -1.66 120.67 1.74 8
11 04/18/2023 00:42:22 69.94, 165.79 59.20 04/18/2023 00:41:13 69.95, 165.83 59.21 1.77 69
12 04/20/2023 15:17:46 70.13, -53.34 58.49 04/20/2023 15:18:42 70.13, -53.31 58.48 1.45 56
13 04/20/2023 16:08:28 -70.03, 114.12 121.62 04/20/2023 16:08:12 -70.02, 114.18 121.64 2.66 16
14 04/20/2023 16:58:59 69.24, -77.41 57.55 04/20/2023 16:57:50 69.30, -79.16 57.66 69.22 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/8/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230409.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