Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2018   06:18:17   (   0.17,-135.00) (   0.24,-134.73)   31.33                80
 06/26/2018   18:39:46   (  -0.15,-135.07) (   0.81,-139.28)  481.19                80
 06/27/2018   18:16:25   (  -0.17,-135.10) (  -0.35,-134.30)   91.24                80
 06/29/2018   06:38:03   (   0.15,-135.14) (  -0.70,-138.89)  427.93                80
 06/30/2018   06:14:42   (   0.17,-135.17) (   0.46,-133.91)  144.18                80
 07/01/2018   18:36:10   (  -0.15,-135.23) (   0.58,-138.46)  369.23                80
 07/02/2018   18:12:50   (  -0.18,-135.25) (  -0.58,-133.48)  202.55                80
 07/04/2018   06:34:27   (   0.15,-135.29) (  -0.47,-138.07)  317.49                80
 07/05/2018   06:11:07   (   0.17,-135.31) (   0.69,-133.09)  254.05                80
 07/06/2018   18:32:35   (  -0.15,-135.36) (   0.35,-137.64)  260.16                80