Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 4.  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)
 06/05/2018   18:34:23   (  -0.18,-134.78) (   0.08,-136.00)  138.27                80
 06/06/2018   18:11:03   (  -0.19,-134.73) (  -1.01,-131.00)  425.81                80
 06/08/2018   06:32:41   (   0.18,-134.62) (  -0.05,-135.58)  110.45                80
 06/09/2018   06:09:21   (   0.19,-134.57) (   1.10,-130.60)  453.42                80
 06/10/2018   18:30:52   (  -0.18,-134.54) (  -0.05,-135.15)   69.36                80
 06/11/2018   18:07:31   (  -0.18,-134.49) (  -1.14,-130.15)  493.82                80
 06/13/2018   06:29:10   (   0.17,-134.35) (   0.08,-134.74)   43.98                80
 06/15/2018   18:24:40   (  -0.18,-134.25) (  -0.18,-134.31)    5.97                80
 06/18/2018   06:22:58   (   0.18,-134.05) (   0.22,-133.90)   17.37                80