Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 1 31.  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)
 01/31/2018   22:49:13   ( -70.17,  13.92) 01/31/2018   22:50:02  ( -70.17,  13.98)    2.58                49
 01/31/2018   23:39:56   (  70.00,-178.52) 01/31/2018   23:39:30  (  70.02,-178.59)    3.26                26
 02/01/2018   00:30:21   ( -69.01,  -9.77) 02/01/2018   00:29:15  ( -69.07, -12.23)   97.95                66
 02/03/2018   14:15:41   (  71.05, -39.05) 02/03/2018   14:16:47  (  70.96, -36.60)   89.32                66
 02/03/2018   15:06:07   ( -70.11, 129.77) 02/03/2018   15:06:30  ( -70.13, 129.81)    2.37                23
 02/03/2018   15:56:51   (  70.00, -62.75) 02/03/2018   15:55:58  (  69.97, -62.77)    3.14                53
 02/06/2018   06:32:19   (  70.20,  78.08) 02/06/2018   06:33:27  (  70.19,  78.15)    2.65                68
 02/06/2018   07:23:00   ( -70.05,-114.37) 02/06/2018   07:22:57  ( -70.08,-114.38)    3.12                 3
 02/06/2018   08:13:40   (  69.73,  53.42) 02/06/2018   08:12:28  (  69.76,  52.81)   23.55                72
 02/08/2018   22:49:13   (  70.15,-166.07) 02/08/2018   22:49:55  (  70.14,-166.05)    1.08                42
 02/08/2018   23:39:55   ( -70.05,   1.40) 02/08/2018   23:39:25  ( -70.03,   1.43)    2.47                30
 02/11/2018   14:15:37   ( -70.93, 141.14) 02/11/2018   14:16:45  ( -70.79, 143.16)   75.32                68
 02/11/2018   15:06:07   (  70.09, -50.21) 02/11/2018   15:06:23  (  70.08, -50.25)    1.73                16
 02/11/2018   15:56:49   ( -69.99, 117.25) 02/11/2018   15:55:53  ( -69.98, 117.24)    2.04                56
 02/14/2018   06:32:18   ( -70.19,-101.91) 02/14/2018   06:33:23  ( -70.19,-101.85)    2.34                65
 02/14/2018   07:23:02   (  70.09,  65.56) 02/14/2018   07:22:50  (  70.07,  65.63)    3.26                12
 02/14/2018   08:13:37   ( -69.62,-126.43) 02/14/2018   08:12:25  ( -69.69,-127.26)   33.54                72