Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 25.  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)
 04/26/2018   06:22:51   (   0.10,-135.45) (   0.60,-133.10)  267.43                80
 04/27/2018   18:39:02   (  -0.11,-135.47) (   0.37,-137.67)  250.43                80
 04/28/2018   18:21:01   (  -0.10,-135.48) (  -0.71,-132.67)  319.76                80
 04/30/2018   06:37:22   (   0.11,-135.49) (  -0.30,-137.27)  203.34                80
 05/01/2018   06:19:22   (   0.11,-135.50) (   0.84,-132.28)  366.54                80
 05/02/2018   18:35:33   (  -0.12,-135.51) (   0.19,-136.84)  152.28                80
 05/03/2018   18:17:33   (  -0.12,-135.51) (  -0.95,-131.85)  417.09                80
 05/05/2018   06:33:53   (   0.13,-135.51) (  -0.05,-136.45)  107.24                80
 05/06/2018   06:15:53   (   0.13,-135.51) (   1.03,-131.45)  461.90                80
 05/07/2018   18:34:44   (  -0.14,-135.51) (  -0.05,-136.02)   57.98                80