Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 5 10.  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)
 05/10/2018   14:15:00   (  70.43, -38.06) 05/10/2018   14:16:11  (  70.35, -37.59)   19.42                71
 05/10/2018   15:05:38   ( -70.12, 129.73) 05/10/2018   15:05:43  ( -70.12, 129.72)    0.49                 5
 05/10/2018   15:56:22   (  70.01, -62.79) 05/10/2018   15:55:10  (  70.02, -62.78)    1.39                72
 05/13/2018   06:31:49   (  70.18,  78.11) 05/13/2018   06:32:41  (  70.20,  78.08)    3.04                52
 05/13/2018   07:22:31   ( -70.08,-114.43) 05/13/2018   07:22:11  ( -70.09,-114.45)    1.15                20
 05/13/2018   08:12:59   (  69.12,  54.28) 05/13/2018   08:11:53  (  69.15,  51.93)   93.31                66
 05/15/2018   22:48:42   (  70.14,-166.06) 05/15/2018   22:49:09  (  70.16,-166.11)    2.78                27
 05/15/2018   23:39:23   ( -70.04,   1.41) 05/15/2018   23:38:38  ( -70.05,   1.37)    1.66                45
 05/18/2018   14:14:55   ( -70.47, 141.89) 05/18/2018   14:16:06  ( -70.38, 142.45)   22.89                71
 05/18/2018   15:05:34   (  70.10, -50.23) 05/18/2018   15:05:36  (  70.11, -50.30)    2.71                 2
 05/18/2018   15:56:16   ( -70.00, 117.24) 05/18/2018   15:55:06  ( -70.00, 117.19)    2.19                70
 05/21/2018   06:31:44   ( -70.22,-101.94) 05/21/2018   06:32:36  ( -70.23,-101.89)    1.94                52
 05/21/2018   07:22:28   (  70.12,  65.52) 05/21/2018   07:22:03  (  70.11,  65.59)    2.88                25
 05/21/2018   08:12:54   ( -69.17,-125.77) 05/21/2018   08:11:47  ( -69.24,-127.97)   86.99                67
 05/23/2018   22:48:37   ( -70.19,  13.88) 05/23/2018   22:49:04  ( -70.18,  13.91)    1.83                27
 05/23/2018   23:39:20   (  70.04,-178.58) 05/23/2018   23:38:31  (  70.06,-178.61)    2.49                49