Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 9.  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)
 12/11/2017   19:00:37   ( -70.18,  71.13) 12/11/2017   19:01:38  ( -70.15,  71.13)    3.18                61
 12/11/2017   19:51:16   (  70.06,-121.36) 12/11/2017   19:51:05  (  70.05,-121.37)    1.14                11
 12/11/2017   20:41:50   ( -69.80,  46.37) 12/11/2017   20:40:37  ( -69.83,  45.95)   16.47                73
 12/14/2017   15:24:46   (  70.11, -54.81) 12/14/2017   15:25:18  (  70.10, -54.86)    2.33                32
 12/14/2017   16:15:23   ( -70.00, 112.70) 12/14/2017   16:14:48  ( -69.99, 112.62)    3.04                35
 12/17/2017   10:58:19   (  70.27,  11.58) 12/17/2017   10:59:30  (  70.26,  11.80)    8.55                71
 12/17/2017   11:48:55   ( -70.10, 179.18) 12/17/2017   11:49:01  ( -70.10, 179.21)    1.19                 6
 12/17/2017   12:39:34   (  69.99, -13.33) 12/17/2017   12:38:28  (  69.99, -13.31)    0.97                66
 12/20/2017   07:22:26   ( -70.15,-114.27) 12/20/2017   07:23:15  ( -70.14,-114.29)    1.01                49
 12/20/2017   08:13:05   (  70.04,  53.22) 12/20/2017   08:12:42  (  70.03,  53.19)    2.01                23
 12/20/2017   09:03:31   ( -69.34,-138.41) 12/20/2017   09:02:22  ( -69.38,-140.07)   65.16                69
 12/23/2017   02:56:09   ( -70.88, -48.80) 12/23/2017   02:57:17  ( -70.78, -46.91)   70.04                68
 12/23/2017   03:46:35   (  70.10, 119.77) 12/23/2017   03:46:54  (  70.12, 119.76)    2.54                19