Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 19.  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)
 12/20/2018   15:05:48   ( -70.09, 129.75) 12/20/2018   15:06:32  ( -70.10, 129.78)    2.14                44
 12/20/2018   15:56:32   (  69.97, -62.76) 12/20/2018   15:56:00  (  69.94, -62.79)    2.75                32
 12/23/2018   06:32:15   (  70.78,  77.09) 12/23/2018   06:33:23  (  70.72,  78.93)   67.90                68
 12/23/2018   07:22:45   ( -70.06,-114.44) 12/23/2018   07:23:03  ( -70.06,-114.40)    1.66                18
 12/23/2018   08:13:29   (  69.94,  53.04) 12/23/2018   08:12:30  (  69.95,  53.09)    2.34                59
 12/25/2018   22:49:00   (  70.13,-166.11) 12/25/2018   22:50:04  (  70.15,-166.04)    2.87                64
 12/25/2018   23:39:41   ( -69.98,   1.44) 12/25/2018   23:39:35  ( -69.99,   1.37)    2.75                 6
 12/26/2018   00:30:18   (  69.50, 169.46) 12/26/2018   00:29:07  (  69.60, 168.48)   39.91                71
 12/28/2018   15:05:56   (  70.11, -50.31) 12/28/2018   15:06:35  (  70.09, -50.25)    3.44                39
 12/28/2018   15:56:37   ( -69.96, 117.24) 12/28/2018   15:56:05  ( -69.99, 117.24)    3.32                32
 12/31/2018   06:32:22   ( -70.88,-103.08) 12/31/2018   06:33:29  ( -70.77,-101.02)   76.34                67
 12/31/2018   07:22:52   (  70.04,  65.56) 12/31/2018   07:23:07  (  70.06,  65.58)    2.13                15
 12/31/2018   08:13:34   ( -69.94,-126.96) 12/31/2018   08:12:37  ( -69.96,-126.93)    2.99                57