Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 12 19.  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)
 12/20/2018   15:05:48   ( -70.07, 129.77) 12/20/2018   15:06:33  ( -70.06, 129.73)    1.81                45
 12/20/2018   15:56:32   (  69.95, -62.73) 12/20/2018   15:56:00  (  69.96, -62.77)    2.03                32
 12/23/2018   06:32:15   (  70.82,  77.03) 12/23/2018   06:33:23  (  70.68,  78.88)   69.44                68
 12/23/2018   07:22:44   ( -70.04,-114.42) 12/23/2018   07:23:03  ( -70.02,-114.45)    2.48                19
 12/23/2018   08:13:28   (  69.93,  53.07) 12/23/2018   08:12:30  (  69.92,  53.05)    1.04                58
 12/25/2018   22:48:59   (  70.12,-166.08) 12/25/2018   22:50:04  (  70.12,-166.08)    0.13                65
 12/25/2018   23:39:41   ( -70.02,   1.38) 12/25/2018   23:39:34  ( -70.01,   1.40)    1.28                 7
 12/26/2018   00:30:18   (  69.53, 169.41) 12/26/2018   00:29:07  (  69.57, 168.44)   38.04                71
 12/28/2018   15:05:56   (  70.10, -50.29) 12/28/2018   15:06:36  (  70.07, -50.28)    3.38                40
 12/28/2018   15:56:37   ( -69.94, 117.26) 12/28/2018   15:56:06  ( -69.96, 117.21)    3.12                31
 12/31/2018   06:32:22   ( -70.86,-103.06) 12/31/2018   06:33:30  ( -70.75,-101.05)   74.46                68
 12/31/2018   07:22:52   (  70.03,  65.59) 12/31/2018   07:23:08  (  70.04,  65.55)    2.21                16
 12/31/2018   08:13:34   ( -69.92,-126.94) 12/31/2018   08:12:38  ( -69.94,-126.95)    2.31                56