Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 29.  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)
 12/30/2017   22:49:17   ( -70.16,  13.98) 12/30/2017   22:50:18  ( -70.19,  13.99)    2.69                61
 12/30/2017   23:40:01   (  70.05,-178.54) 12/30/2017   23:39:46  (  70.03,-178.59)    2.99                15
 12/31/2017   00:30:34   ( -69.48, -10.38) 12/31/2017   00:29:23  ( -69.53, -11.64)   49.32                71
 01/02/2018   15:06:10   ( -70.12, 129.82) 01/02/2018   15:06:47  ( -70.14, 129.81)    2.56                37
 01/02/2018   15:56:54   (  70.02, -62.71) 01/02/2018   15:56:14  (  70.04, -62.70)    2.84                40
 01/05/2018   06:32:30   (  70.65,  77.43) 01/05/2018   06:33:40  (  70.53,  78.62)   46.08                70
 01/05/2018   07:23:03   ( -70.08,-114.35) 01/05/2018   07:23:16  ( -70.10,-114.38)    2.24                13
 01/05/2018   08:13:47   (  69.98,  53.12) 01/05/2018   08:12:43  (  69.99,  53.11)    1.39                64
 01/07/2018   22:49:14   (  70.14,-165.99) 01/07/2018   22:50:15  (  70.15,-166.06)    2.76                61
 01/07/2018   23:39:56   ( -70.04,   1.49) 01/07/2018   23:39:45  ( -70.04,   1.43)    2.46                11
 01/08/2018   00:30:29   (  69.40, 169.73) 01/08/2018   00:29:20  (  69.43, 168.24)   58.32                69
 01/10/2018   15:06:07   (  70.15, -50.24) 01/10/2018   15:06:42  (  70.14, -50.18)    2.30                35
 01/10/2018   15:56:49   ( -70.05, 117.24) 01/10/2018   15:56:12  ( -70.04, 117.30)    2.36                37