Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 11.  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)
 04/13/2018   18:28:47   (  -0.06,-135.22) (  -0.06,-135.14)    8.86                80
 04/16/2018   06:29:48   (   0.07,-135.29) (   0.18,-134.75)   60.95                80
 04/17/2018   18:45:59   (  -0.08,-135.32) (   0.80,-139.32)  455.92                80
 04/18/2018   18:27:59   (  -0.07,-135.33) (  -0.28,-134.32)  115.18                80
 04/20/2018   06:44:20   (   0.09,-135.36) (  -0.68,-138.93)  406.19                80
 04/21/2018   06:26:19   (   0.09,-135.37) (   0.39,-133.93)  164.43                80
 04/22/2018   18:42:31   (  -0.10,-135.39) (   0.58,-138.50)  353.96                80
 04/23/2018   18:24:30   (  -0.09,-135.40) (  -0.50,-133.50)  216.29                80
 04/25/2018   06:40:50   (   0.10,-135.42) (  -0.52,-138.10)  306.00                80