Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 9 20.  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)
 09/22/2017   06:37:59   (   0.26,-135.34) (  -0.17,-137.24)  216.67                80
 09/23/2017   06:17:18   (   0.24,-135.35) (   0.93,-132.24)  354.01                80
 09/24/2017   18:33:30   (  -0.26,-135.43) (   0.05,-136.81)  157.62                80
 09/25/2017   18:15:29   (  -0.24,-135.44) (  -1.05,-131.81)  413.30                80
 09/27/2017   06:34:28   (   0.26,-135.39) (   0.01,-136.41)  115.68                80
 09/28/2017   06:11:07   (   0.24,-135.40) (   1.12,-131.41)  454.20                80
 09/29/2017   18:29:58   (  -0.26,-135.46) (  -0.15,-135.98)   59.22                80
 10/02/2017   06:30:56   (   0.26,-135.41) (   0.21,-135.57)   18.50                80
 10/04/2017   18:29:07   (  -0.27,-135.46) (  -0.35,-135.15)   35.45                80