Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 4 24.  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)
 04/24/2018   14:15:09   (  70.50, -38.18) 04/24/2018   14:16:19  (  70.41, -37.49)   27.61                70
 04/24/2018   15:05:46   ( -70.14, 129.69) 04/24/2018   15:05:52  ( -70.13, 129.74)    2.65                 6
 04/24/2018   15:56:30   (  70.03, -62.83) 04/24/2018   15:55:19  (  70.03, -62.76)    2.77                71
 04/27/2018   06:31:57   (  70.18,  78.08) 04/27/2018   06:32:51  (  70.18,  78.05)    1.43                54
 04/27/2018   07:22:39   ( -70.09,-114.46) 04/27/2018   07:22:21  ( -70.06,-114.48)    3.25                18
 04/27/2018   08:13:08   (  69.18,  54.18) 04/27/2018   08:12:01  (  69.24,  52.05)   84.34                67
 04/29/2018   22:48:50   (  70.13,-166.07) 04/29/2018   22:49:19  (  70.16,-166.10)    2.71                29
 04/29/2018   23:39:32   ( -70.04,   1.39) 04/29/2018   23:38:49  ( -70.05,   1.38)    1.07                43
 05/02/2018   14:15:05   ( -70.51, 141.81) 05/02/2018   14:16:17  ( -70.41, 142.50)   27.74                72
 05/02/2018   15:05:44   (  70.14, -50.31) 05/02/2018   15:05:47  (  70.13, -50.25)    2.09                 3
 05/02/2018   15:56:26   ( -70.04, 117.16) 05/02/2018   15:55:17  ( -70.03, 117.23)    2.92                69
 05/05/2018   06:31:52   ( -70.20,-101.93) 05/05/2018   06:32:47  ( -70.22,-101.90)    2.74                55
 05/05/2018   07:22:36   (  70.10,  65.54) 05/05/2018   07:22:14  (  70.11,  65.59)    2.19                22
 05/05/2018   08:13:05   ( -69.31,-125.98) 05/05/2018   08:11:56  ( -69.34,-127.83)   72.51                69
 05/07/2018   22:48:45   ( -70.15,  13.92) 05/07/2018   22:49:16  ( -70.14,  13.86)    2.55                31
 05/07/2018   23:39:29   (  70.05,-178.62) 05/07/2018   23:38:42  (  70.08,-178.58)    3.12                47