Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2017   18:36:30   (  -0.27,-135.24) (   0.28,-137.62)  271.48                80
 10/19/2017   18:18:29   (  -0.27,-135.22) (  -0.83,-132.63)  295.80                80
 10/21/2017   06:37:28   (   0.27,-135.15) (  -0.21,-137.22)  236.30                80
 10/22/2017   06:14:07   (   0.27,-135.12) (   0.90,-132.22)  329.90                80
 10/23/2017   18:32:57   (  -0.27,-135.11) (   0.09,-136.79)  190.34                80
 10/24/2017   18:14:57   (  -0.26,-135.09) (  -1.02,-131.79)  376.20                80
 10/26/2017   06:33:55   (   0.26,-135.01) (  -0.03,-136.38)  156.25                80
 10/27/2017   06:10:34   (   0.26,-134.97) (   1.03,-131.37)  409.15                80
 10/28/2017   18:29:24   (  -0.26,-134.95) (  -0.05,-135.94)  112.91                80
 10/29/2017   18:11:24   (  -0.25,-134.91) (  -1.16,-130.94)  452.88                80
 10/31/2017   06:30:22   (   0.25,-134.83) (   0.12,-135.53)   79.82                80
 11/01/2017   06:07:01   (   0.25,-134.79) (   1.18,-130.53)  484.82                80