Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 9 22.  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)
 09/23/2017   06:15:31   (   0.24,-135.35) (   0.92,-132.24)  353.92                27
 09/24/2017   18:33:30   (  -0.26,-135.42) (   0.05,-136.81)  158.01                80
 09/25/2017   18:15:29   (  -0.24,-135.44) (  -1.05,-131.81)  412.80                80
 09/27/2017   06:34:27   (   0.26,-135.39) (   0.01,-136.40)  116.24                80
 09/28/2017   06:11:07   (   0.24,-135.39) (   1.11,-131.41)  453.54                80
 09/29/2017   18:29:58   (  -0.26,-135.45) (  -0.14,-135.98)   60.20                80
 10/02/2017   06:30:56   (   0.26,-135.40) (   0.21,-135.57)   19.68                80
 10/04/2017   18:29:07   (  -0.27,-135.44) (  -0.34,-135.15)   33.86                80
 10/06/2017   06:48:05   (   0.28,-135.40) (  -0.70,-139.74)  494.82                80