Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 5 20.  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)
 05/21/2018   18:44:54   (  -0.16,-135.28) (   0.58,-138.51)  368.03                80
 05/22/2018   18:21:35   (  -0.17,-135.26) (  -0.57,-133.52)  198.38                80
 05/24/2018   06:40:34   (   0.16,-135.20) (  -0.46,-138.11)  331.85                80
 05/25/2018   06:22:34   (   0.17,-135.17) (   0.62,-133.11)  234.58                80
 05/26/2018   18:41:24   (  -0.16,-135.15) (   0.42,-137.67)  287.10                80
 05/27/2018   18:18:04   (  -0.17,-135.13) (  -0.72,-132.68)  278.89                80
 05/29/2018   06:39:44   (   0.16,-135.06) (  -0.30,-137.28)  252.22                80
 05/30/2018   06:19:03   (   0.17,-135.03) (   0.79,-132.28)  313.48                80
 05/31/2018   18:37:53   (  -0.17,-135.00) (   0.27,-136.83)  209.25                80
 06/01/2018   18:14:34   (  -0.18,-134.97) (  -0.88,-131.84)  355.91                80
 06/03/2018   06:36:12   (   0.17,-134.89) (  -0.19,-136.43)  176.32                80