Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 8.  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)
 12/09/2017   18:18:02   (  -0.14,-135.38) (  -0.92,-131.77)  410.86                80
 12/11/2017   06:37:03   (   0.13,-135.43) (  -0.09,-136.38)  107.67                80
 12/12/2017   06:13:45   (   0.13,-135.43) (   1.07,-131.39)  461.52                80
 12/13/2017   18:32:35   (  -0.12,-135.40) (   0.03,-135.93)   61.34                80
 12/16/2017   06:33:38   (   0.12,-135.45) (   0.12,-135.55)   10.99                80
 12/18/2017   18:31:50   (  -0.11,-135.40) (  -0.19,-135.11)   33.55                80
 12/20/2017   06:50:50   (   0.09,-135.45) (  -0.88,-139.70)  485.23                80
 12/21/2017   06:27:32   (   0.10,-135.44) (   0.28,-134.72)   82.83                80
 12/22/2017   18:46:22   (  -0.09,-135.38) (   0.81,-139.26)  443.50                80