Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 22.  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)
 06/23/2018   06:19:30   (   0.18,-134.92) (   0.57,-133.09)  208.31                80
 06/24/2018   18:41:02   (  -0.16,-134.99) (   0.42,-137.66)  303.77                80
 06/25/2018   18:17:41   (  -0.17,-135.03) (  -0.67,-132.66)  268.98                80
 06/27/2018   06:39:20   (   0.15,-135.07) (  -0.32,-137.26)  249.34                80
 06/28/2018   06:16:00   (   0.17,-135.11) (   0.78,-132.27)  323.04                80
 06/29/2018   18:37:31   (  -0.15,-135.17) (   0.21,-136.83)  190.07                80
 06/30/2018   18:14:12   (  -0.18,-135.20) (  -0.94,-131.85)  381.89                80
 07/02/2018   06:35:50   (   0.15,-135.23) (  -0.11,-136.44)  137.40                80
 07/03/2018   06:12:31   (   0.18,-135.26) (   1.05,-131.45)  434.33                80
 07/04/2018   18:34:01   (  -0.15,-135.31) (  -0.00,-136.01)   79.50                80
 07/05/2018   18:10:41   (  -0.17,-135.33) (  -1.16,-131.02)  491.86                80