Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 4.  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)
 12/06/2017   03:02:58   (  70.15, 130.58) 12/06/2017   03:03:41  (  70.12, 130.58)    2.62                43
 12/06/2017   03:53:35   ( -70.05, -61.94) 12/06/2017   03:53:10  ( -70.07, -61.86)    3.24                25
 12/06/2017   04:43:59   (  69.12, 106.74) 12/06/2017   04:42:52  (  69.13, 104.52)   88.24                67
 12/08/2017   22:36:37   (  70.67,-163.62) 12/08/2017   22:37:47  (  70.57,-162.33)   48.90                70
 12/08/2017   23:27:05   ( -70.09,   4.63) 12/08/2017   23:27:24  ( -70.07,   4.59)    2.66                19
 12/09/2017   00:17:44   (  69.97, 172.15) 12/09/2017   00:16:51  (  69.97, 172.08)    2.51                53
 12/11/2017   19:00:37   ( -70.19,  71.11) 12/11/2017   19:01:37  ( -70.19,  71.18)    2.66                60
 12/11/2017   19:51:16   (  70.07,-121.38) 12/11/2017   19:51:04  (  70.08,-121.33)    1.98                12
 12/11/2017   20:41:49   ( -69.75,  46.44) 12/11/2017   20:40:37  ( -69.81,  45.93)   20.65                72
 12/14/2017   15:24:47   (  70.12, -54.82) 12/14/2017   15:25:18  (  70.12, -54.82)    0.90                31
 12/14/2017   16:15:24   ( -70.00, 112.69) 12/14/2017   16:14:48  ( -70.02, 112.67)    2.62                36
 12/17/2017   10:58:19   (  70.27,  11.58) 12/17/2017   10:59:30  (  70.22,  11.75)    8.29                71
 12/17/2017   11:48:55   ( -70.09, 179.19) 12/17/2017   11:49:01  ( -70.07, 179.17)    2.94                 6
 12/17/2017   12:39:34   (  69.99, -13.32) 12/17/2017   12:38:27  (  70.00, -13.28)    2.65                67