Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 14.  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)
 12/14/2017   15:24:52   (  70.11, -54.84) 12/14/2017   15:25:21  (  70.09, -54.88)    2.87                29
 12/14/2017   16:15:29   ( -70.01, 112.66) 12/14/2017   16:14:50  ( -70.03, 112.67)    2.78                39
 12/17/2017   10:58:27   (  70.19,  11.66) 12/17/2017   10:59:34  (  70.21,  11.72)    3.12                67
 12/17/2017   11:49:04   ( -70.07, 179.17) 12/17/2017   11:49:04  ( -70.10, 179.19)    2.66                 0
 12/17/2017   12:39:43   (  69.95, -13.32) 12/17/2017   12:38:32  (  69.94, -13.39)    3.21                71
 12/20/2017   07:22:40   ( -70.14,-114.32) 12/20/2017   07:23:19  ( -70.16,-114.29)    2.00                39
 12/20/2017   08:13:19   (  70.03,  53.18) 12/20/2017   08:12:46  (  70.05,  53.20)    2.51                33
 12/23/2017   02:56:20   ( -70.42, -48.14) 12/23/2017   02:57:32  ( -70.32, -47.62)   21.99                72
 12/23/2017   03:46:55   (  70.10, 119.69) 12/23/2017   03:47:01  (  70.10, 119.71)    0.79                 6
 12/23/2017   04:37:32   ( -69.97, -72.79) 12/23/2017   04:36:31  ( -70.00, -72.81)    2.49                61
 12/25/2017   23:20:30   (  70.17,-173.81) 12/25/2017   23:21:15  (  70.14,-173.80)    3.13                45
 12/26/2017   00:11:07   ( -70.04,  -6.28) 12/26/2017   00:10:45  ( -70.04,  -6.31)    1.21                22
 12/26/2017   01:01:32   (  69.19, 162.29) 12/26/2017   01:00:24  (  69.27, 160.28)   79.50                68