Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 1 15.  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)
 01/15/2018   22:49:13   ( -70.17,  13.95) 01/15/2018   22:50:11  ( -70.19,  14.00)    3.03                58
 01/15/2018   23:39:57   (  70.05,-178.57) 01/15/2018   23:39:39  (  70.04,-178.58)    1.96                18
 01/16/2018   00:30:28   ( -69.38, -10.25) 01/16/2018   00:29:18  ( -69.42, -11.79)   60.11                70
 01/18/2018   15:06:07   ( -70.10, 129.82) 01/18/2018   15:06:40  ( -70.12, 129.78)    2.84                33
 01/18/2018   15:56:51   (  69.99, -62.70) 01/18/2018   15:56:07  (  70.02, -62.72)    3.22                44
 01/21/2018   06:32:25   (  70.45,  77.73) 01/21/2018   06:33:36  (  70.32,  78.31)   25.94                71
 01/21/2018   07:23:02   ( -70.08,-114.39) 01/21/2018   07:23:08  ( -70.10,-114.37)    1.56                 6
 01/21/2018   08:13:46   (  69.98,  53.08) 01/21/2018   08:12:35  (  69.99,  53.12)    2.24                71
 01/23/2018   22:49:15   (  70.17,-166.07) 01/23/2018   22:50:06  (  70.18,-166.01)    2.71                51
 01/23/2018   23:39:57   ( -70.07,   1.40) 01/23/2018   23:39:36  ( -70.07,   1.47)    2.81                21
 01/24/2018   00:30:25   (  69.11, 170.10) 01/24/2018   00:29:18  (  69.13, 167.85)   89.26                67
 01/26/2018   15:06:08   (  70.10, -50.21) 01/26/2018   15:06:34  (  70.09, -50.25)    2.38                26
 01/26/2018   15:56:50   ( -70.00, 117.27) 01/26/2018   15:56:04  ( -69.98, 117.23)    2.39                46
 01/29/2018   06:32:22   ( -70.35,-102.13) 01/29/2018   06:33:33  ( -70.27,-101.75)   16.72                71
 01/29/2018   07:23:03   (  70.09,  65.58) 01/29/2018   07:23:01  (  70.10,  65.66)    3.26                 2
 01/29/2018   08:13:44   ( -69.93,-126.87) 01/29/2018   08:12:32  ( -69.95,-126.93)    2.90                72