Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 26.  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)
 12/27/2017   18:42:56   (  -0.07,-135.24) (   0.62,-138.43)  362.92                80
 12/28/2017   18:24:56   (  -0.07,-135.23) (  -0.49,-133.44)  204.06                80
 12/30/2017   06:43:57   (   0.06,-135.25) (  -0.57,-138.03)  317.35                80
 12/31/2017   06:20:37   (   0.07,-135.22) (   0.54,-133.03)  248.65                80
 01/01/2018   18:39:28   (  -0.06,-135.12) (   0.49,-137.59)  281.47                80
 01/02/2018   18:21:29   (  -0.06,-135.09) (  -0.61,-132.59)  284.53                80
 01/04/2018   06:40:29   (   0.05,-135.11) (  -0.44,-137.19)  237.71                80
 01/05/2018   06:17:10   (   0.05,-135.07) (   0.67,-132.19)  327.80                80
 01/06/2018   18:36:01   (  -0.04,-134.97) (   0.37,-136.75)  203.36                80
 01/07/2018   18:18:02   (  -0.05,-134.94) (  -0.74,-131.75)  362.35                80
 01/09/2018   06:37:02   (   0.04,-134.95) (  -0.30,-136.35)  159.97                80