Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 11.  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   06:29:10   (   0.17,-134.37) (   0.10,-134.74)   41.55                80
 06/15/2018   18:24:41   (  -0.18,-134.28) (  -0.20,-134.31)    4.10                80
 06/18/2018   06:22:59   (   0.18,-134.08) (   0.24,-133.90)   21.65                80
 06/20/2018   18:21:08   (  -0.18,-133.98) (  -0.28,-133.45)   59.50                80
 06/22/2018   06:42:47   (   0.16,-133.84) (  -0.78,-138.04)  478.93                80
 06/23/2018   06:19:26   (   0.18,-133.78) (   0.32,-133.04)   83.26                80
 06/24/2018   18:40:56   (  -0.15,-133.73) (   0.73,-137.60)  441.68                80
 06/25/2018   18:17:37   (  -0.17,-133.66) (  -0.42,-132.61)  120.04                80