Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 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)
 06/25/2017   06:34:27   (   0.14,-135.43) (   0.12,-135.59)   17.50                80
 06/27/2017   18:29:58   (  -0.14,-135.48) (  -0.21,-135.15)   37.53                80
 06/29/2017   06:51:38   (   0.12,-135.44) (  -0.82,-139.75)  490.40                80
 06/30/2017   06:28:17   (   0.14,-135.44) (   0.27,-134.75)   78.63                80
 07/01/2017   18:49:48   (  -0.12,-135.49) (   0.73,-139.31)  435.62                80
 07/02/2017   18:26:29   (  -0.14,-135.49) (  -0.42,-134.33)  133.00                80
 07/04/2017   06:48:07   (   0.11,-135.44) (  -0.67,-138.91)  395.73                80
 07/05/2017   06:24:48   (   0.13,-135.43) (   0.47,-133.92)  172.60                80
 07/06/2017   18:46:18   (  -0.11,-135.47) (   0.57,-138.47)  342.51                80