Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-B
TLE Epoch: 2017 12 20.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(METOP-B) METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2017   18:45:16   (  81.12, -61.53) 12/21/2017   18:44:09  (  81.13, -61.37)    2.70                67
 12/21/2017   19:34:42   ( -81.14, 106.42) 12/21/2017   19:34:49  ( -81.14, 106.35)    1.13                 7
 12/24/2017   14:19:32   (  81.12,   4.82) 12/24/2017   14:18:32  (  81.12,   4.90)    1.39                60
 12/24/2017   15:08:58   ( -81.14, 172.79) 12/24/2017   15:09:12  ( -81.14, 172.66)    2.09                14
 12/27/2017   09:53:46   (  81.13,  71.48) 12/27/2017   09:52:53  (  81.13,  71.52)    0.76                53
 12/27/2017   10:43:13   ( -81.13,-120.89) 12/27/2017   10:43:34  ( -81.13,-121.05)    2.68                21
 12/30/2017   05:28:02   (  81.12, 137.74) 12/30/2017   05:27:16  (  81.12, 137.74)    0.21                46
 12/30/2017   06:17:28   ( -81.15, -54.25) 12/30/2017   06:17:56  ( -81.14, -54.41)    2.73                28
 01/02/2018   01:02:17   (  81.13,-155.69) 01/02/2018   01:01:38  (  81.13,-155.68)    0.31                39