Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 18.  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   15:05:47   ( -70.06, 129.80) 12/20/2018   15:06:32  ( -70.07, 129.74)    2.98                45
 12/20/2018   15:56:32   (  69.99, -62.79) 12/20/2018   15:55:59  (  69.97, -62.76)    2.25                33
 12/23/2018   06:32:15   (  70.81,  77.05) 12/23/2018   06:33:23  (  70.68,  78.87)   68.24                68
 12/23/2018   07:22:44   ( -70.03,-114.40) 12/23/2018   07:23:03  ( -70.02,-114.45)    2.14                19
 12/23/2018   08:13:28   (  69.91,  53.09) 12/23/2018   08:12:30  (  69.92,  53.04)    1.80                58
 12/25/2018   22:48:59   (  70.10,-166.06) 12/25/2018   22:50:04  (  70.10,-166.11)    1.80                65
 12/25/2018   23:39:41   ( -70.00,   1.41) 12/25/2018   23:39:34  ( -70.00,   1.38)    1.36                 7
 12/26/2018   00:30:18   (  69.52, 169.43) 12/26/2018   00:29:07  (  69.55, 168.42)   39.68                71
 12/28/2018   15:05:56   (  70.08, -50.26) 12/28/2018   15:06:35  (  70.09, -50.25)    0.75                39
 12/28/2018   15:56:38   ( -69.98, 117.21) 12/28/2018   15:56:05  ( -69.99, 117.24)    1.37                33
 12/31/2018   06:32:21   ( -70.85,-103.03) 12/31/2018   06:33:29  ( -70.70,-101.13)   71.59                68
 12/31/2018   07:22:52   (  70.06,  65.53) 12/31/2018   07:23:06  (  70.04,  65.55)    2.74                14
 12/31/2018   08:13:34   ( -69.96,-126.99) 12/31/2018   08:12:36  ( -69.94,-126.95)    2.41                58