Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2019 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)
 12/20/2019   22:49:08   ( -70.81,  12.84) 12/20/2019   22:50:16  ( -70.69,  14.76)   71.65                68
 12/20/2019   23:39:39   (  70.01,-178.57) 12/20/2019   23:39:53  (  70.03,-178.55)    3.13                14
 12/21/2019   00:30:21   ( -69.92, -11.13) 12/21/2019   00:29:23  ( -69.93, -11.07)    2.19                58
 12/23/2019   15:05:52   ( -70.12, 129.72) 12/23/2019   15:06:55  ( -70.11, 129.79)    2.94                63
 12/23/2019   15:56:36   (  69.99, -62.78) 12/23/2019   15:56:22  (  70.00, -62.72)    2.57                14
 12/23/2019   16:47:10   ( -69.49, 105.28) 12/23/2019   16:45:59  ( -69.51, 104.24)   40.68                71
 12/26/2019   07:22:48   ( -70.05,-114.42) 12/26/2019   07:23:24  ( -70.08,-114.37)    3.24                36
 12/26/2019   08:13:32   (  69.93,  53.08) 12/26/2019   08:12:52  (  69.91,  53.03)    3.21                40
 12/28/2019   22:49:08   (  70.45,-166.59) 12/28/2019   22:50:19  (  70.30,-165.80)   33.56                71
 12/28/2019   23:39:43   ( -69.99,   1.45) 12/28/2019   23:39:53  ( -69.98,   1.37)    2.83                10
 12/29/2019   00:30:28   (  69.92, 168.85) 12/29/2019   00:29:19  (  69.92, 168.93)    3.05                69
 12/31/2019   15:05:58   (  70.07, -50.24) 12/31/2019   15:06:51  (  70.09, -50.23)    1.63                53
 12/31/2019   15:56:40   ( -69.98, 117.23) 12/31/2019   15:56:21  ( -69.99, 117.27)    2.28                19
 12/31/2019   16:47:09   (  69.07, -74.15) 12/31/2019   16:46:02  (  69.10, -76.29)   85.25                67