Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 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)
 12/17/2018   22:48:51   ( -70.12,  13.94) 12/17/2018   22:50:02  ( -70.10,  13.90)    2.60                71
 12/17/2018   23:39:35   (  69.99,-178.57) 12/17/2018   23:39:29  (  70.00,-178.59)    1.10                 6
 12/18/2018   00:30:14   ( -69.75, -10.88) 12/18/2018   00:29:01  ( -69.77, -11.27)   15.20                73
 12/20/2018   15:05:48   ( -70.09, 129.75) 12/20/2018   15:06:32  ( -70.07, 129.74)    2.46                44
 12/20/2018   15:56:32   (  69.97, -62.76) 12/20/2018   15:55:59  (  69.97, -62.76)    0.39                33
 12/23/2018   06:32:15   (  70.79,  77.08) 12/23/2018   06:33:23  (  70.66,  78.84)   66.32                68
 12/23/2018   07:22:45   ( -70.06,-114.45) 12/23/2018   07:23:02  ( -70.05,-114.41)    1.97                17
 12/23/2018   08:13:29   (  69.95,  53.04) 12/23/2018   08:12:29  (  69.95,  53.09)    2.19                60
 12/25/2018   22:48:59   (  70.08,-166.03) 12/25/2018   22:50:03  (  70.10,-166.09)    3.14                64
 12/25/2018   23:39:41   ( -69.99,   1.44) 12/25/2018   23:39:33  ( -70.00,   1.39)    2.08                 8
 12/26/2018   00:30:17   (  69.45, 169.54) 12/26/2018   00:29:07  (  69.50, 168.36)   46.37                70
 12/28/2018   15:05:55   (  70.07, -50.24) 12/28/2018   15:06:33  (  70.06, -50.28)    1.89                38
 12/28/2018   15:56:37   ( -69.96, 117.24) 12/28/2018   15:56:03  ( -69.95, 117.21)    1.51                34