Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 7.  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)
 06/08/2018   06:32:41   (   0.18,-134.62) (  -0.03,-135.59)  109.85                80
 06/09/2018   06:09:21   (   0.18,-134.57) (   1.07,-130.59)  454.17                80
 06/10/2018   18:30:51   (  -0.17,-134.55) (  -0.01,-135.14)   68.56                80
 06/11/2018   18:07:32   (  -0.18,-134.49) (  -1.16,-130.15)  494.80                80
 06/13/2018   06:29:10   (   0.17,-134.36) (   0.10,-134.74)   42.74                80
 06/15/2018   18:27:20   (  -0.17,-134.27) (  -0.14,-134.30)    5.01                80
 06/18/2018   06:22:59   (   0.18,-134.06) (   0.24,-133.90)   19.45                80
 06/20/2018   18:21:08   (  -0.18,-133.96) (  -0.28,-133.45)   56.94                80