Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 13.  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)
 12/15/2018   06:32:12   ( -71.05,-103.33) 12/15/2018   06:33:18  ( -70.91,-100.76)   94.48                66
 12/15/2018   07:22:39   (  70.04,  65.60) 12/15/2018   07:22:59  (  70.04,  65.60)    0.49                20
 12/15/2018   08:13:21   ( -69.95,-126.95) 12/15/2018   08:12:29  ( -69.93,-126.93)    2.50                52
 12/17/2018   22:48:52   ( -70.12,  13.93) 12/17/2018   22:50:01  ( -70.10,  13.92)    2.17                69
 12/17/2018   23:39:36   (  70.01,-178.58) 12/17/2018   23:39:28  (  70.00,-178.58)    1.03                 8
 12/18/2018   00:30:13   ( -69.65, -10.74) 12/18/2018   00:29:01  ( -69.72, -11.33)   24.27                72
 12/20/2018   15:05:49   ( -70.09, 129.74) 12/20/2018   15:06:30  ( -70.06, 129.74)    3.60                41
 12/20/2018   15:56:32   (  69.97, -62.77) 12/20/2018   15:55:56  (  69.95, -62.77)    3.31                36
 12/23/2018   06:32:11   (  70.58,  77.42) 12/23/2018   06:33:21  (  70.49,  78.62)   45.39                70
 12/23/2018   07:22:45   ( -70.06,-114.44) 12/23/2018   07:22:57  ( -70.06,-114.37)    2.65                12
 12/23/2018   08:13:29   (  69.95,  53.04) 12/23/2018   08:12:24  (  69.94,  53.11)    2.96                65
 12/25/2018   22:48:59   (  70.08,-166.02) 12/25/2018   22:49:56  (  70.10,-166.06)    3.09                57
 12/25/2018   23:39:41   ( -69.97,   1.45) 12/25/2018   23:39:26  ( -70.00,   1.43)    3.13                15
 12/26/2018   00:30:13   (  69.23, 169.85) 12/26/2018   00:29:04  (  69.28, 168.09)   69.37                69