Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 15.  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  ( -70.93,-100.73)   94.96                66
 12/15/2018   07:22:39   (  70.03,  65.61) 12/15/2018   07:23:00  (  70.01,  65.55)    3.18                21
 12/15/2018   08:13:21   ( -69.95,-126.95) 12/15/2018   08:12:29  ( -69.95,-126.90)    1.83                52
 12/17/2018   22:48:52   ( -70.13,  13.92) 12/17/2018   22:50:01  ( -70.14,  13.97)    2.28                69
 12/17/2018   23:39:36   (  70.01,-178.59) 12/17/2018   23:39:29  (  69.98,-178.61)    3.19                 7
 12/18/2018   00:30:14   ( -69.71, -10.82) 12/18/2018   00:29:01  ( -69.76, -11.28)   18.76                73
 12/20/2018   15:05:47   ( -70.05, 129.81) 12/20/2018   15:06:30  ( -70.06, 129.73)    3.03                43
 12/20/2018   15:56:31   (  69.93, -62.71) 12/20/2018   15:55:57  (  69.95, -62.77)    3.17                34
 12/23/2018   06:32:12   (  70.65,  77.32) 12/23/2018   06:33:21  (  70.57,  78.73)   52.97                69
 12/23/2018   07:22:44   ( -70.02,-114.39) 12/23/2018   07:22:59  ( -70.03,-114.43)    1.53                15
 12/23/2018   08:13:28   (  69.91,  53.09) 12/23/2018   08:12:26  (  69.91,  53.06)    1.22                62
 12/25/2018   22:48:59   (  70.10,-166.06) 12/25/2018   22:49:58  (  70.10,-166.08)    0.83                59
 12/25/2018   23:39:41   ( -70.00,   1.41) 12/25/2018   23:39:28  ( -70.00,   1.41)    0.57                13
 12/26/2018   00:30:14   (  69.31, 169.74) 12/26/2018   00:29:05  (  69.33, 168.15)   62.53                69
 12/28/2018   15:05:56   (  70.09, -50.27) 12/28/2018   15:06:27  (  70.06, -50.24)    2.70                31
 12/28/2018   15:56:38   ( -69.98, 117.21) 12/28/2018   15:55:57  ( -69.96, 117.25)    2.53                41