Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 13.  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   (  70.14, -54.87) 12/14/2017   15:25:20  (  70.12, -54.84)    2.35                28
 12/14/2017   16:15:29   ( -70.03, 112.62) 12/14/2017   16:14:50  ( -70.01, 112.63)    2.69                39
 12/17/2017   10:58:27   (  70.16,  11.70) 12/17/2017   10:59:35  (  70.18,  11.68)    2.51                68
 12/17/2017   11:49:05   ( -70.10, 179.13) 12/17/2017   11:49:05  ( -70.07, 179.16)    3.21                 0
 12/17/2017   12:39:44   (  69.98, -13.36) 12/17/2017   12:38:32  (  69.97, -13.35)    1.62                72
 12/20/2017   07:22:39   ( -70.11,-114.28) 12/20/2017   07:23:19  ( -70.13,-114.33)    2.62                40
 12/20/2017   08:13:18   (  70.00,  53.22) 12/20/2017   08:12:46  (  70.02,  53.16)    3.09                32
 12/23/2017   02:56:20   ( -70.44, -48.18) 12/23/2017   02:57:31  ( -70.34, -47.59)   24.79                71
 12/23/2017   03:46:54   (  70.08, 119.72) 12/23/2017   03:47:01  (  70.07, 119.66)    2.32                 7
 12/23/2017   04:37:32   ( -70.00, -72.83) 12/23/2017   04:36:30  ( -70.02, -72.77)    3.07                62
 12/25/2017   23:20:30   (  70.15,-173.78) 12/25/2017   23:21:15  (  70.17,-173.76)    1.98                45
 12/26/2017   00:11:08   ( -70.07,  -6.32) 12/26/2017   00:10:45  ( -70.07,  -6.27)    1.90                23
 12/26/2017   01:01:32   (  69.17, 162.32) 12/26/2017   01:00:25  (  69.23, 160.24)   82.34                67