Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 4 6.  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)
 04/08/2018   14:15:17   (  70.55, -38.29) 04/08/2018   14:16:28  (  70.44, -37.44)   34.07                71
 04/08/2018   15:05:52   ( -70.10, 129.75) 04/08/2018   15:06:02  ( -70.10, 129.72)    1.33                10
 04/08/2018   15:56:36   (  69.98, -62.77) 04/08/2018   15:55:29  (  70.00, -62.79)    2.43                67
 04/11/2018   06:32:04   (  70.17,  78.09) 04/11/2018   06:33:00  (  70.19,  78.09)    2.27                56
 04/11/2018   07:22:46   ( -70.08,-114.46) 04/11/2018   07:22:30  ( -70.08,-114.44)    0.67                16
 04/11/2018   08:13:17   (  69.28,  54.03) 04/11/2018   08:12:09  (  69.31,  52.16)   73.94                68
 04/13/2018   22:48:58   (  70.16,-166.12) 04/13/2018   22:49:28  (  70.16,-166.08)    1.69                30
 04/13/2018   23:39:40   ( -70.06,   1.34) 04/13/2018   23:38:58  ( -70.05,   1.40)    2.65                42
 04/16/2018   14:15:13   ( -70.57, 141.70) 04/16/2018   14:16:24  ( -70.46, 142.59)   35.08                71
 04/16/2018   15:05:50   (  70.09, -50.25) 04/16/2018   15:05:56  (  70.07, -50.32)    3.62                 6
 04/16/2018   15:56:32   ( -70.00, 117.22) 04/16/2018   15:55:25  ( -70.02, 117.24)    3.12                67
 04/19/2018   06:32:00   ( -70.18,-101.93) 04/19/2018   06:32:56  ( -70.21,-101.90)    2.55                56
 04/19/2018   07:22:44   (  70.08,  65.54) 04/19/2018   07:22:23  (  70.09,  65.58)    1.87                21