Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2018 1 2.  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)
 01/02/2018   15:06:10   ( -70.14, 129.78) 01/02/2018   15:06:47  ( -70.13, 129.78)    1.94                37
 01/02/2018   15:56:54   (  70.03, -62.74) 01/02/2018   15:56:14  (  70.03, -62.72)    1.20                40
 01/05/2018   06:32:30   (  70.67,  77.40) 01/05/2018   06:33:39  (  70.58,  78.68)   48.69                69
 01/05/2018   07:23:03   ( -70.10,-114.38) 01/05/2018   07:23:16  ( -70.08,-114.41)    2.96                13
 01/05/2018   08:13:47   (  70.00,  53.09) 01/05/2018   08:12:43  (  69.97,  53.09)    2.35                64
 01/07/2018   22:49:14   (  70.16,-166.02) 01/07/2018   22:50:14  (  70.19,-166.00)    3.16                60
 01/07/2018   23:39:56   ( -70.06,   1.45) 01/07/2018   23:39:44  ( -70.08,   1.48)    2.07                12
 01/08/2018   00:30:30   (  69.43, 169.69) 01/08/2018   00:29:20  (  69.48, 168.29)   55.07                70
 01/10/2018   15:06:07   (  70.13, -50.19) 01/10/2018   15:06:43  (  70.13, -50.21)    0.55                36
 01/10/2018   15:56:49   ( -70.02, 117.28) 01/10/2018   15:56:13  ( -70.02, 117.27)    0.38                36
 01/13/2018   06:32:26   ( -70.76,-102.74) 01/13/2018   06:33:35  ( -70.66,-101.18)   58.27                69
 01/13/2018   07:22:59   (  70.09,  65.64) 01/13/2018   07:23:10  (  70.12,  65.66)    3.24                11
 01/13/2018   08:13:41   ( -69.98,-126.89) 01/13/2018   08:12:40  ( -70.01,-126.86)    3.31                61
 01/15/2018   22:49:08   ( -70.15,  14.01) 01/15/2018   22:50:12  ( -70.16,  13.96)    2.35                64
 01/15/2018   23:39:52   (  70.05,-178.54) 01/15/2018   23:39:39  (  70.04,-178.56)    1.18                13
 01/16/2018   00:30:26   ( -69.52, -10.43) 01/16/2018   00:29:15  ( -69.61, -11.53)   43.64                71