Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 13.  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   18:31:27   (  -0.07,-135.23) (  -0.09,-135.15)    9.70                80
 04/16/2018   06:29:48   (   0.07,-135.29) (   0.21,-134.76)   61.57                80
 04/17/2018   18:45:59   (  -0.08,-135.33) (   0.82,-139.31)  454.33                80
 04/18/2018   18:27:59   (  -0.08,-135.35) (  -0.31,-134.33)  116.85                80
 04/20/2018   06:44:19   (   0.09,-135.37) (  -0.70,-138.93)  405.13                80
 04/21/2018   06:26:20   (   0.09,-135.39) (   0.43,-133.94)  165.63                80
 04/22/2018   18:42:30   (  -0.10,-135.41) (   0.60,-138.49)  351.71                80
 04/23/2018   18:24:31   (  -0.09,-135.42) (  -0.54,-133.50)  218.63                80
 04/25/2018   06:40:51   (   0.10,-135.43) (  -0.47,-138.11)  304.34                80
 04/26/2018   06:22:51   (   0.10,-135.44) (   0.61,-133.10)  266.08                80