Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 27.  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)
 12/28/2017   06:32:34   ( -70.69,-102.63) 12/28/2017   06:33:44  ( -70.54,-101.38)   49.18                70
 12/28/2017   07:23:09   (  70.11,  65.60) 12/28/2017   07:23:17  (  70.11,  65.65)    1.74                 8
 12/28/2017   08:13:51   ( -70.02,-126.94) 12/28/2017   08:12:47  ( -70.00,-126.89)    3.20                64
 12/30/2017   22:49:18   ( -70.18,  13.95) 12/30/2017   22:50:19  ( -70.17,  13.97)    1.11                61
 12/30/2017   23:40:02   (  70.07,-178.57) 12/30/2017   23:39:46  (  70.07,-178.54)    1.56                16
 12/31/2017   00:30:34   ( -69.45, -10.33) 12/31/2017   00:29:24  ( -69.52, -11.66)   52.46                70
 01/02/2018   15:06:10   ( -70.14, 129.79) 01/02/2018   15:06:47  ( -70.13, 129.78)    1.67                37
 01/02/2018   15:56:54   (  70.04, -62.75) 01/02/2018   15:56:14  (  70.02, -62.72)    2.16                40
 01/05/2018   06:32:30   (  70.68,  77.39) 01/05/2018   06:33:39  (  70.57,  78.67)   48.85                69
 01/05/2018   07:23:03   ( -70.10,-114.38) 01/05/2018   07:23:16  ( -70.07,-114.41)    3.14                13
 01/05/2018   08:13:46   (  69.95,  53.16) 01/05/2018   08:12:43  (  69.96,  53.08)    3.62                63
 01/07/2018   22:49:14   (  70.17,-166.03) 01/07/2018   22:50:14  (  70.18,-166.01)    1.18                60
 01/07/2018   23:39:56   ( -70.06,   1.45) 01/07/2018   23:39:44  ( -70.07,   1.47)    1.36                12
 01/08/2018   00:30:30   (  69.43, 169.69) 01/08/2018   00:29:20  (  69.46, 168.28)   55.29                70