Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 1.  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)
 12/01/2018   22:48:52   ( -70.23,  13.76) 12/01/2018   22:50:03  ( -70.20,  14.04)   11.34                71
 12/01/2018   23:39:34   (  70.00,-178.59) 12/01/2018   23:39:32  (  69.99,-178.61)    1.21                 2
 12/02/2018   00:30:15   ( -69.86, -11.07) 12/02/2018   00:29:02  ( -69.87, -11.14)    2.89                73
 12/04/2018   15:05:44   ( -70.09, 129.74) 12/04/2018   15:06:34  ( -70.06, 129.74)    3.37                50
 12/04/2018   15:56:28   (  69.97, -62.77) 12/04/2018   15:56:01  (  69.96, -62.76)    1.43                27
 12/04/2018   16:46:53   ( -68.99, 105.97) 12/04/2018   16:45:46  ( -69.02, 103.61)   94.10                67
 12/07/2018   06:32:13   (  71.05,  76.65) 12/07/2018   06:33:18  (  70.96,  79.32)   97.19                65
 12/07/2018   07:22:37   ( -70.02,-114.37) 12/07/2018   07:23:03  ( -70.03,-114.43)    2.80                26
 12/07/2018   08:13:22   (  69.95,  53.04) 12/07/2018   08:12:30  (  69.93,  53.07)    3.18                52
 12/09/2018   22:48:49   (  70.14,-166.10) 12/09/2018   22:50:01  (  70.10,-166.08)    4.10                72
 12/09/2018   23:39:30   ( -70.00,   1.44) 12/09/2018   23:39:31  ( -70.00,   1.41)    1.46                 1
 12/10/2018   00:30:12   (  69.78, 169.08) 12/10/2018   00:28:59  (  69.83, 168.82)   11.77                73
 12/12/2018   15:05:42   (  70.07, -50.21) 12/12/2018   15:06:30  (  70.06, -50.26)    2.38                48
 12/12/2018   15:56:24   ( -69.98, 117.25) 12/12/2018   15:56:00  ( -69.95, 117.23)    2.74                24