Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 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)
 04/16/2018   06:29:48   (   0.07,-135.29) (   0.20,-134.76)   61.52                80
 04/17/2018   18:45:58   (  -0.08,-135.32) (   0.83,-139.31)  455.40                80
 04/18/2018   18:27:59   (  -0.08,-135.34) (  -0.30,-134.32)  115.79                80
 04/20/2018   06:44:19   (   0.09,-135.37) (  -0.71,-138.92)  405.13                80
 04/21/2018   06:26:20   (   0.09,-135.38) (   0.42,-133.93)  165.59                80
 04/22/2018   18:42:30   (  -0.10,-135.40) (   0.61,-138.49)  352.81                80
 04/23/2018   18:24:31   (  -0.10,-135.41) (  -0.53,-133.50)  217.54                80
 04/25/2018   06:40:51   (   0.10,-135.43) (  -0.48,-138.10)  304.34                80
 04/26/2018   06:22:50   (   0.10,-135.44) (   0.59,-133.10)  266.06                80
 04/27/2018   18:39:02   (  -0.11,-135.45) (   0.38,-137.67)  252.63                80
 04/28/2018   18:21:01   (  -0.10,-135.46) (  -0.70,-132.67)  317.45                80