Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-B
TLE Epoch: 2017 12 21.  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, -61.57) 12/21/2017   18:44:09  (  81.12, -61.42)    2.59                67
 12/21/2017   19:34:42   ( -81.14, 106.37) 12/21/2017   19:34:49  ( -81.14, 106.30)    1.12                 7
 12/24/2017   14:19:32   (  81.12,   4.79) 12/24/2017   14:18:32  (  81.12,   4.85)    1.15                60
 12/24/2017   15:08:58   ( -81.14, 172.74) 12/24/2017   15:09:12  ( -81.13, 172.61)    2.27                14
 12/27/2017   09:53:47   (  81.13,  71.47) 12/27/2017   09:52:54  (  81.13,  71.47)    0.51                53
 12/27/2017   10:43:14   ( -81.13,-120.92) 12/27/2017   10:43:35  ( -81.13,-121.10)    3.11                21
 12/30/2017   05:28:02   (  81.12, 137.74) 12/30/2017   05:27:16  (  81.12, 137.70)    0.70                46
 12/30/2017   06:17:28   ( -81.14, -54.26) 12/30/2017   06:17:55  ( -81.15, -54.08)    3.10                27
 01/02/2018   01:02:17   (  81.13,-155.67) 01/02/2018   01:01:38  (  81.13,-155.72)    1.11                39