Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 8.  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)
 06/09/2018   06:09:21   (   0.18,-134.58) (   1.10,-130.59)  454.34                80
 06/10/2018   18:30:52   (  -0.17,-134.55) (  -0.04,-135.15)   68.34                80
 06/11/2018   18:07:31   (  -0.18,-134.50) (  -1.13,-130.15)  494.99                80
 06/13/2018   06:29:09   (   0.17,-134.37) (   0.08,-134.74)   42.36                80
 06/15/2018   18:27:20   (  -0.17,-134.27) (  -0.17,-134.30)    3.77                80
 06/18/2018   06:22:58   (   0.18,-134.07) (   0.21,-133.89)   19.98                80
 06/20/2018   18:21:09   (  -0.18,-133.96) (  -0.31,-133.46)   57.71                80
 06/22/2018   06:42:46   (   0.16,-133.82) (  -0.80,-138.04)  481.22                80