Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 6 17.  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)
 06/19/2018   14:14:49   ( -70.81, 141.37) 06/19/2018   14:15:58  ( -70.68, 143.06)   63.70                69
 06/19/2018   15:05:21   (  70.06, -50.13) 06/19/2018   15:05:34  (  70.09, -50.17)    2.75                13
 06/19/2018   15:56:03   ( -69.98, 117.31) 06/19/2018   15:55:04  ( -69.98, 117.31)    0.40                59
 06/22/2018   06:31:33   ( -70.16,-101.82) 06/22/2018   06:32:38  ( -70.18,-101.80)    2.97                65
 06/22/2018   07:22:17   (  70.04,  65.67) 06/22/2018   07:22:06  (  70.02,  65.61)    2.96                11
 06/22/2018   08:12:52   ( -69.58,-126.33) 06/22/2018   08:11:41  ( -69.64,-127.28)   37.56                71
 06/24/2018   22:48:29   ( -70.13,  13.99) 06/24/2018   22:49:10  ( -70.12,  13.99)    1.16                41
 06/24/2018   23:39:13   (  70.01,-178.52) 06/24/2018   23:38:37  (  70.01,-178.53)    0.44                36
 06/27/2018   14:14:54   (  70.77, -38.59) 06/27/2018   14:16:03  (  70.64, -37.00)   60.24                69
 06/27/2018   15:05:25   ( -70.10, 129.79) 06/27/2018   15:05:41  ( -70.11, 129.85)    1.97                16
 06/27/2018   15:56:09   (  69.99, -62.72) 06/27/2018   15:55:08  (  69.99, -62.67)    2.02                61
 06/30/2018   06:31:38   (  70.17,  78.13) 06/30/2018   06:32:41  (  70.19,  78.21)    3.15                63
 06/30/2018   07:22:19   ( -70.03,-114.32) 06/30/2018   07:22:12  ( -70.03,-114.38)    2.21                 7
 06/30/2018   08:12:56   (  69.54,  53.70) 06/30/2018   08:11:45  (  69.59,  52.65)   41.31                71