Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 4 21.  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)
 04/21/2018   22:48:53   ( -70.14,  13.91) 04/21/2018   22:49:25  ( -70.14,  13.88)    1.37                32
 04/21/2018   23:39:37   (  70.03,-178.60) 04/21/2018   23:38:52  (  70.04,-178.62)    1.39                45
 04/24/2018   14:15:08   (  70.44, -38.10) 04/24/2018   14:16:20  (  70.35, -37.57)   22.26                72
 04/24/2018   15:05:46   ( -70.14, 129.69) 04/24/2018   15:05:52  ( -70.13, 129.74)    2.38                 6
 04/24/2018   15:56:30   (  70.03, -62.83) 04/24/2018   15:55:19  (  70.03, -62.76)    2.68                71
 04/27/2018   06:31:57   (  70.18,  78.08) 04/27/2018   06:32:51  (  70.17,  78.04)    2.28                54
 04/27/2018   07:22:39   ( -70.09,-114.46) 04/27/2018   07:22:20  ( -70.11,-114.41)    3.32                19
 04/27/2018   08:13:08   (  69.18,  54.18) 04/27/2018   08:12:01  (  69.23,  52.04)   84.55                67
 04/29/2018   22:48:50   (  70.14,-166.07) 04/29/2018   22:49:19  (  70.14,-166.12)    1.85                29
 04/29/2018   23:39:32   ( -70.04,   1.40) 04/29/2018   23:38:49  ( -70.04,   1.36)    1.22                43
 05/02/2018   14:15:05   ( -70.51, 141.81) 05/02/2018   14:16:17  ( -70.39, 142.47)   27.80                72
 05/02/2018   15:05:43   (  70.09, -50.23) 05/02/2018   15:05:47  (  70.11, -50.28)    3.13                 4
 05/02/2018   15:56:25   ( -69.99, 117.24) 05/02/2018   15:55:17  ( -70.01, 117.20)    2.70                68