Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 5.  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)
 12/06/2017   06:40:29   (   0.15,-135.39) (  -0.26,-137.21)  206.90                80
 12/07/2017   06:17:10   (   0.15,-135.40) (   0.84,-132.21)  362.72                80
 12/08/2017   18:36:01   (  -0.14,-135.38) (   0.20,-136.77)  159.03                80
 12/09/2017   18:18:03   (  -0.14,-135.39) (  -0.96,-131.78)  411.14                80
 12/11/2017   06:37:04   (   0.13,-135.44) (  -0.05,-136.38)  107.02                80
 12/12/2017   06:13:45   (   0.13,-135.44) (   1.04,-131.39)  462.31                80
 12/13/2017   18:32:36   (  -0.12,-135.41) (  -0.01,-135.94)   60.54                80
 12/16/2017   06:33:38   (   0.12,-135.47) (   0.10,-135.55)    9.30                80
 12/18/2017   18:31:49   (  -0.11,-135.41) (  -0.17,-135.11)   34.83                80