Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2018   06:29:09   (   0.17,-134.37) (   0.07,-134.73)   41.59                80
 06/15/2018   18:27:20   (  -0.17,-134.28) (  -0.17,-134.30)    2.78                80
 06/18/2018   06:22:58   (   0.18,-134.08) (   0.20,-133.89)   21.73                80
 06/20/2018   18:21:09   (  -0.18,-133.98) (  -0.31,-133.46)   59.51                80
 06/22/2018   06:42:46   (   0.16,-133.84) (  -0.80,-138.03)  478.89                80
 06/23/2018   06:19:27   (   0.18,-133.78) (   0.35,-133.05)   83.30                80
 06/24/2018   18:40:57   (  -0.15,-133.73) (   0.70,-137.60)  441.61                80
 06/25/2018   18:17:36   (  -0.17,-133.66) (  -0.39,-132.60)  120.11                80