Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 24.  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)
 12/25/2017   06:47:23   (   0.07,-135.34) (  -0.74,-138.86)  401.60                80
 12/26/2017   06:24:05   (   0.08,-135.32) (   0.42,-133.88)  165.34                80
 12/27/2017   18:42:55   (  -0.07,-135.24) (   0.66,-138.42)  363.33                80
 12/28/2017   18:24:57   (  -0.07,-135.22) (  -0.50,-133.44)  203.54                80
 12/30/2017   06:43:57   (   0.06,-135.24) (  -0.55,-138.03)  317.63                80
 12/31/2017   06:20:37   (   0.07,-135.22) (   0.55,-133.04)  248.27                80
 01/01/2018   18:39:29   (  -0.06,-135.11) (   0.48,-137.59)  282.42                80
 01/02/2018   18:21:29   (  -0.06,-135.08) (  -0.62,-132.60)  283.47                80
 01/04/2018   06:40:29   (   0.05,-135.10) (  -0.42,-137.19)  238.52                80
 01/05/2018   06:17:10   (   0.05,-135.06) (   0.68,-132.19)  326.87                80
 01/06/2018   18:36:01   (  -0.04,-134.95) (   0.35,-136.75)  204.83                80