Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 4 23.  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)
 04/24/2018   14:15:09   (  70.46, -38.13) 04/24/2018   14:16:20  (  70.39, -37.52)   24.24                71
 04/24/2018   15:05:46   ( -70.11, 129.74) 04/24/2018   15:05:53  ( -70.11, 129.71)    0.98                 7
 04/24/2018   15:56:30   (  69.99, -62.78) 04/24/2018   15:55:20  (  70.01, -62.79)    1.60                70
 04/27/2018   06:31:57   (  70.20,  78.05) 04/27/2018   06:32:50  (  70.21,  78.10)    1.94                53
 04/27/2018   07:22:39   ( -70.11,-114.49) 04/27/2018   07:22:20  ( -70.10,-114.43)    2.54                19
 04/27/2018   08:13:08   (  69.20,  54.15) 04/27/2018   08:12:01  (  69.22,  52.02)   84.12                67
 04/29/2018   22:48:50   (  70.15,-166.10) 04/29/2018   22:49:19  (  70.13,-166.13)    2.54                29
 04/29/2018   23:39:32   ( -70.06,   1.37) 04/29/2018   23:38:48  ( -70.08,   1.42)    3.34                44
 05/02/2018   14:15:05   ( -70.53, 141.78) 05/02/2018   14:16:16  ( -70.44, 142.54)   29.87                71
 05/02/2018   15:05:43   (  70.11, -50.26) 05/02/2018   15:05:47  (  70.11, -50.29)    1.26                 4
 05/02/2018   15:56:25   ( -70.01, 117.21) 05/02/2018   15:55:17  ( -70.00, 117.19)    0.91                68
 05/05/2018   06:31:53   ( -70.22,-101.96) 05/05/2018   06:32:48  ( -70.19,-101.93)    2.60                55
 05/05/2018   07:22:36   (  70.06,  65.59) 05/05/2018   07:22:15  (  70.08,  65.55)    2.29                21