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: 3/9/2023
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 03/11/2023 15:18:37 -70.10, 126.59 106.24 03/11/2023 15:19:05 -70.09, 126.65 106.26 2.38 28
2 03/11/2023 16:09:21 69.98, -65.93 73.63 03/11/2023 16:08:32 69.98, -65.86 73.63 2.87 49
3 03/14/2023 06:44:48 70.18, 74.91 72.81 03/14/2023 06:45:59 70.18, 75.03 72.78 4.73 71
4 03/14/2023 07:35:29 -70.04,-117.55 107.37 03/14/2023 07:35:30 -70.01,-117.57 107.40 3.13 1
5 03/14/2023 08:26:11 69.82, 50.08 72.40 03/14/2023 08:24:58 69.84, 49.84 72.44 9.55 73
6 03/16/2023 23:01:39 70.10,-169.18 71.65 03/16/2023 23:02:23 70.09,-169.19 71.63 1.19 44
7 03/16/2023 23:52:21 -70.00, -1.72 108.47 03/16/2023 23:51:53 -69.98, -1.71 108.49 2.66 28
8 03/19/2023 14:27:58 -70.82, 138.14 108.64 03/19/2023 14:29:07 -70.71, 139.99 108.83 68.68 69
9 03/19/2023 15:18:29 70.03, -53.31 70.52 03/19/2023 15:18:44 70.05, -53.34 70.53 1.67 15
10 03/19/2023 16:09:11 -69.94, 114.16 109.60 03/19/2023 16:08:14 -69.94, 114.14 109.59 0.59 57
11 03/22/2023 06:44:36 -70.10,-104.94 110.47 03/22/2023 06:45:38 -70.12,-104.97 110.45 3.09 62
12 03/22/2023 07:35:20 70.00, 62.52 69.42 03/22/2023 07:35:05 70.00, 62.51 69.42 0.71 15
13 03/22/2023 08:25:53 -69.42,-129.31 111.21 03/22/2023 08:24:43 -69.45,-130.61 111.12 50.81 70

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/9/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230309.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/09/2023 in txt file.

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