Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 4 13.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2021   22:49:23   ( -70.15,  13.91) 04/13/2021   22:49:52  ( -70.14,  13.87)    2.33                29
 04/13/2021   23:40:07   (  70.03,-178.59) 04/13/2021   23:39:19  (  70.03,-178.63)    1.72                48
 04/16/2021   14:15:38   (  70.26, -37.81) 04/16/2021   14:16:50  (  70.24, -37.73)    3.54                72
 04/16/2021   15:06:19   ( -70.12, 129.72) 04/16/2021   15:06:20  ( -70.13, 129.74)    1.62                 1
 04/16/2021   15:57:01   (  69.89, -62.63) 04/16/2021   15:55:49  (  69.91, -62.92)   11.38                72
 04/19/2021   06:32:32   (  70.18,  78.07) 04/19/2021   06:33:18  (  70.18,  78.05)    0.90                46
 04/19/2021   07:23:14   ( -70.09,-114.48) 04/19/2021   07:22:48  ( -70.07,-114.47)    2.52                26
 04/21/2021   21:58:59   ( -71.06,  25.11) 04/21/2021   22:00:06  ( -70.98,  27.49)   86.55                67
 04/21/2021   22:49:28   (  70.16,-166.13) 04/21/2021   22:49:46  (  70.16,-166.09)    1.51                18
 04/21/2021   23:40:10   ( -70.07,   1.32) 04/21/2021   23:39:16  ( -70.06,   1.39)    2.79                54
 04/24/2021   14:15:39   ( -70.20, 142.26) 04/24/2021   14:16:48  ( -70.20, 142.20)    2.48                69
 04/24/2021   15:06:23   (  70.08, -50.25) 04/24/2021   15:06:15  (  70.09, -50.32)    2.57                 8
 04/24/2021   15:57:00   ( -69.72, 117.60) 04/24/2021   15:55:48  ( -69.82, 116.94)   27.44                72