Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 28.  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)
 12/28/2017   18:24:56   (  -0.07,-135.23) (  -0.46,-133.43)  204.26                80
 12/30/2017   06:43:57   (   0.06,-135.25) (  -0.53,-138.04)  317.29                80
 12/31/2017   06:20:38   (   0.07,-135.22) (   0.57,-133.04)  248.77                80
 01/01/2018   18:39:28   (  -0.06,-135.12) (   0.52,-137.59)  281.05                80
 01/02/2018   18:21:30   (  -0.06,-135.10) (  -0.65,-132.60)  285.05                80
 01/04/2018   06:40:30   (   0.05,-135.11) (  -0.40,-137.20)  237.32                80
 01/05/2018   06:17:10   (   0.05,-135.08) (   0.71,-132.20)  328.22                80
 01/06/2018   18:36:01   (  -0.04,-134.97) (   0.38,-136.74)  202.63                80
 01/07/2018   18:18:02   (  -0.04,-134.94) (  -0.78,-131.76)  363.17                80
 01/09/2018   06:37:03   (   0.04,-134.95) (  -0.26,-136.36)  159.26                80
 01/10/2018   06:13:43   (   0.04,-134.92) (   0.85,-131.36)  405.92                80