Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 10.  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)
 06/11/2018   18:07:31   (  -0.18,-134.50) (  -1.15,-130.15)  495.20                80
 06/13/2018   06:29:10   (   0.17,-134.37) (   0.09,-134.74)   41.72                80
 06/15/2018   18:24:41   (  -0.18,-134.28) (  -0.19,-134.31)    3.57                80
 06/18/2018   06:22:58   (   0.18,-134.08) (   0.23,-133.89)   21.16                80
 06/20/2018   18:21:09   (  -0.18,-133.97) (  -0.32,-133.46)   59.07                80
 06/22/2018   06:42:46   (   0.16,-133.83) (  -0.78,-138.04)  479.58                80
 06/23/2018   06:19:26   (   0.18,-133.77) (   0.31,-133.04)   82.58                80
 06/24/2018   18:40:57   (  -0.15,-133.72) (   0.69,-137.61)  442.37                80