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) (   0.04,-135.49)   23.09                80
 12/30/2017   18:27:15   (  -0.07,-135.18) (  -0.10,-135.05)   14.66                80
 01/02/2018   06:22:53   (   0.06,-135.17) (   0.19,-134.65)   58.73                80
 01/03/2018   18:41:42   (  -0.05,-135.07) (   0.88,-139.21)  471.97                80
 01/04/2018   18:23:42   (  -0.05,-135.04) (  -0.24,-134.21)   94.06                80
 01/06/2018   06:42:40   (   0.04,-135.05) (  -0.78,-138.81)  428.02                80
 01/07/2018   06:19:20   (   0.05,-135.02) (   0.34,-133.81)  137.58                80
 01/08/2018   18:38:09   (  -0.04,-134.91) (   0.73,-138.37)  393.99                80
 01/09/2018   18:20:08   (  -0.04,-134.88) (  -0.39,-133.37)  171.70                80