Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 16.  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)
 12/17/2018   22:48:51   ( -70.10,  13.97) 12/17/2018   22:50:02  ( -70.10,  13.91)    2.16                71
 12/17/2018   23:39:36   (  70.03,-178.62) 12/17/2018   23:39:29  (  70.00,-178.58)    3.08                 7
 12/18/2018   00:30:14   ( -69.73, -10.85) 12/18/2018   00:29:01  ( -69.78, -11.26)   16.64                73
 12/20/2018   15:05:48   ( -70.07, 129.77) 12/20/2018   15:06:32  ( -70.06, 129.73)    2.35                44
 12/20/2018   15:56:32   (  69.95, -62.74) 12/20/2018   15:55:59  (  69.95, -62.78)    1.40                33
 12/23/2018   06:32:14   (  70.72,  77.19) 12/23/2018   06:33:23  (  70.62,  78.79)   59.95                69
 12/23/2018   07:22:44   ( -70.05,-114.42) 12/23/2018   07:23:01  ( -70.02,-114.45)    3.11                17
 12/23/2018   08:13:28   (  69.93,  53.06) 12/23/2018   08:12:28  (  69.91,  53.04)    2.40                60
 12/25/2018   22:48:59   (  70.12,-166.09) 12/25/2018   22:50:01  (  70.09,-166.10)    3.31                62
 12/25/2018   23:39:40   ( -69.97,   1.46) 12/25/2018   23:39:31  ( -69.99,   1.39)    3.35                 9
 12/26/2018   00:30:16   (  69.44, 169.55) 12/26/2018   00:29:05  (  69.49, 168.35)   47.42                71
 12/28/2018   15:05:55   (  70.06, -50.22) 12/28/2018   15:06:31  (  70.07, -50.25)    2.06                36
 12/28/2018   15:56:37   ( -69.95, 117.25) 12/28/2018   15:56:01  ( -69.97, 117.24)    2.08                36