Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 3 14.  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)
 03/15/2018   18:28:57   (   0.00,-135.05) (   0.00,-135.11)    7.26                80
 03/18/2018   06:29:57   (  -0.00,-134.95) (   0.07,-134.71)   27.70                80
 03/19/2018   18:46:08   (  -0.00,-134.91) (   0.95,-139.27)  497.22                80
 03/20/2018   18:28:08   (   0.00,-134.87) (  -0.12,-134.27)   67.73                80
 03/22/2018   06:44:28   (   0.00,-134.79) (  -0.88,-138.87)  464.52                80
 03/23/2018   06:26:28   (   0.00,-134.75) (   0.18,-133.87)   99.82                80
 03/24/2018   18:42:39   (  -0.01,-134.69) (   0.82,-138.43)  426.77                80
 03/25/2018   18:24:39   (  -0.01,-134.64) (  -0.30,-133.44)  137.15                80
 03/27/2018   06:40:59   (   0.01,-134.55) (  -0.76,-138.03)  396.52                80
 03/28/2018   06:22:58   (   0.01,-134.50) (   0.31,-133.02)  167.23                80