Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2017   06:29:06   (   0.07,-135.29) (   0.05,-135.49)   23.07                80
 12/30/2017   18:27:15   (  -0.07,-135.18) (  -0.10,-135.05)   14.37                80
 01/02/2018   06:22:53   (   0.06,-135.16) (   0.19,-134.65)   58.52                80
 01/03/2018   18:41:42   (  -0.05,-135.06) (   0.87,-139.21)  472.50                80
 01/04/2018   18:23:42   (  -0.05,-135.03) (  -0.25,-134.21)   93.48                80
 01/06/2018   06:42:40   (   0.04,-135.04) (  -0.77,-138.81)  428.48                80
 01/07/2018   06:19:19   (   0.05,-135.01) (   0.29,-133.80)  137.07                80
 01/08/2018   18:38:09   (  -0.04,-134.90) (   0.72,-138.37)  394.80                80
 01/09/2018   18:20:08   (  -0.04,-134.87) (  -0.40,-133.37)  170.85                80