Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 5 21.  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)
 05/23/2018   22:48:36   ( -70.17,  13.92) 05/23/2018   22:49:03  ( -70.17,  13.91)    0.74                27
 05/23/2018   23:39:20   (  70.06,-178.60) 05/23/2018   23:38:30  (  70.07,-178.59)    1.54                50
 05/26/2018   14:14:49   (  70.34, -37.88) 05/26/2018   14:16:00  (  70.28, -37.69)    9.51                71
 05/26/2018   15:05:29   ( -70.13, 129.74) 05/26/2018   15:05:31  ( -70.11, 129.70)    2.90                 2
 05/26/2018   15:56:11   (  69.92, -62.62) 05/26/2018   15:54:59  (  69.95, -62.88)   10.51                72
 05/29/2018   06:31:40   (  70.20,  78.10) 05/29/2018   06:32:28  (  70.21,  78.09)    1.09                48
 05/29/2018   07:22:22   ( -70.10,-114.43) 05/29/2018   07:21:58  ( -70.10,-114.43)    0.07                24
 05/31/2018   22:48:33   (  70.18,-166.08) 05/31/2018   22:48:55  (  70.19,-166.06)    2.22                22
 05/31/2018   23:39:14   ( -70.08,   1.39) 05/31/2018   23:38:24  ( -70.09,   1.43)    2.19                50
 06/03/2018   14:14:42   ( -70.30, 142.19) 06/03/2018   14:15:54  ( -70.29, 142.32)    5.21                72
 06/03/2018   15:05:25   (  70.15, -50.27) 06/03/2018   15:05:21  (  70.17, -50.20)    3.34                 4
 06/03/2018   15:56:05   ( -69.94, 117.37) 06/03/2018   15:54:53  ( -69.96, 117.13)    9.19                72