Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 1 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)
 01/21/2018   06:32:25   (  70.45,  77.73) 01/21/2018   06:33:36  (  70.32,  78.32)   26.09                71
 01/21/2018   07:23:02   ( -70.09,-114.40) 01/21/2018   07:23:08  ( -70.09,-114.38)    0.95                 6
 01/21/2018   08:13:46   (  69.98,  53.08) 01/21/2018   08:12:35  (  69.99,  53.13)    2.52                71
 01/23/2018   22:49:15   (  70.17,-166.08) 01/23/2018   22:50:06  (  70.18,-166.00)    3.05                51
 01/23/2018   23:39:56   ( -70.03,   1.47) 01/23/2018   23:39:37  ( -70.01,   1.39)    3.12                19
 01/24/2018   00:30:25   (  69.12, 170.09) 01/24/2018   00:29:18  (  69.13, 167.85)   88.85                67
 01/26/2018   15:06:08   (  70.11, -50.22) 01/26/2018   15:06:34  (  70.09, -50.25)    2.48                26
 01/26/2018   15:56:50   ( -70.01, 117.25) 01/26/2018   15:56:03  ( -70.04, 117.31)    3.40                47
 01/29/2018   06:32:21   ( -70.31,-102.07) 01/29/2018   06:33:33  ( -70.27,-101.75)   12.84                72
 01/29/2018   07:23:02   (  70.05,  65.64) 01/29/2018   07:23:02  (  70.05,  65.58)    2.36                 0
 01/29/2018   08:13:44   ( -69.95,-126.89) 01/29/2018   08:12:32  ( -69.95,-126.94)    1.93                72
 01/31/2018   22:49:13   ( -70.14,  13.96) 01/31/2018   22:50:03  ( -70.12,  13.92)    3.02                50
 01/31/2018   23:39:57   (  70.04,-178.58) 01/31/2018   23:39:29  (  70.06,-178.52)    3.18                28