Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 1.  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)
 12/03/2017   06:38:48   ( -70.23,-103.50) 12/03/2017   06:40:00  ( -70.19,-103.40)    5.15                72
 12/03/2017   07:29:26   (  70.09,  64.04) 12/03/2017   07:29:26  (  70.08,  64.09)    2.10                 0
 12/03/2017   08:20:02   ( -69.95,-128.41) 12/03/2017   08:18:56  ( -69.98,-128.43)    3.34                66
 12/06/2017   03:02:56   (  70.14, 130.60) 12/06/2017   03:03:40  (  70.15, 130.62)    1.49                44
 12/06/2017   03:53:33   ( -70.04, -61.91) 12/06/2017   03:53:10  ( -70.05, -61.89)    1.24                23
 12/06/2017   04:43:58   (  69.17, 106.69) 12/06/2017   04:42:50  (  69.22, 104.62)   81.77                68
 12/08/2017   22:36:37   (  70.79,-163.80) 12/08/2017   22:37:45  (  70.71,-162.11)   62.23                68
 12/08/2017   23:27:03   ( -70.10,   4.63) 12/08/2017   23:27:24  ( -70.12,   4.65)    2.19                21
 12/09/2017   00:17:42   (  69.98, 172.14) 12/09/2017   00:16:51  (  70.00, 172.13)    2.27                51
 12/11/2017   19:00:33   ( -70.19,  71.13) 12/11/2017   19:01:38  ( -70.19,  71.19)    2.13                65
 12/11/2017   19:51:12   (  70.08,-121.37) 12/11/2017   19:51:05  (  70.08,-121.34)    1.34                 7
 12/11/2017   20:41:48   ( -69.97,  46.14) 12/11/2017   20:40:34  ( -69.98,  46.16)    1.78                74
 12/14/2017   15:24:40   (  70.14, -54.83) 12/14/2017   15:25:18  (  70.15, -54.80)    1.40                38
 12/14/2017   16:15:17   ( -70.02, 112.69) 12/14/2017   16:14:48  ( -70.05, 112.70)    3.43                29