Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 30.  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)
 01/02/2018   06:22:53   (   0.06,-135.17) (   0.18,-134.65)   58.71                80
 01/03/2018   18:41:42   (  -0.05,-135.07) (   0.88,-139.20)  471.15                80
 01/04/2018   18:23:42   (  -0.05,-135.04) (  -0.24,-134.21)   94.99                80
 01/06/2018   06:42:40   (   0.04,-135.05) (  -0.79,-138.81)  427.62                80
 01/07/2018   06:19:19   (   0.04,-135.02) (   0.33,-133.81)  138.06                80
 01/08/2018   18:38:09   (  -0.03,-134.92) (   0.73,-138.37)  392.67                80
 01/09/2018   18:20:08   (  -0.04,-134.89) (  -0.39,-133.37)  173.12                80
 01/11/2018   06:39:07   (   0.03,-134.89) (  -0.63,-137.97)  349.85                80
 01/12/2018   06:15:45   (   0.04,-134.86) (   0.44,-132.96)  215.28                80
 01/13/2018   18:34:35   (  -0.03,-134.74) (   0.58,-137.53)  316.86                80