Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 23.  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) (   0.22,-134.72)   31.21                80
 06/26/2018   18:39:46   (  -0.15,-135.06) (   0.77,-139.29)  481.26                80
 06/27/2018   18:16:25   (  -0.17,-135.10) (  -0.33,-134.29)   91.15                80
 06/29/2018   06:38:03   (   0.15,-135.14) (  -0.66,-138.90)  428.31                80
 06/30/2018   06:14:42   (   0.17,-135.17) (   0.44,-133.90)  143.76                80
 07/01/2018   18:36:11   (  -0.15,-135.22) (   0.54,-138.47)  369.55                80
 07/02/2018   18:12:50   (  -0.18,-135.25) (  -0.56,-133.47)  202.19                80
 07/04/2018   06:34:27   (   0.15,-135.28) (  -0.48,-138.07)  318.10                80
 07/05/2018   06:11:06   (   0.17,-135.30) (   0.68,-133.08)  253.40                80
 07/06/2018   18:32:35   (  -0.15,-135.35) (   0.36,-137.64)  260.68                80
 07/07/2018   18:09:14   (  -0.17,-135.37) (  -0.80,-132.65)  310.35                80