Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 9 16.  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)
 09/17/2017   06:38:49   (   0.24,-135.25) (  -0.40,-138.06)  320.89                80
 09/18/2017   06:20:49   (   0.23,-135.27) (   0.70,-133.06)  250.45                80
 09/19/2017   18:37:00   (  -0.25,-135.37) (   0.28,-137.64)  259.22                80
 09/20/2017   18:19:00   (  -0.23,-135.39) (  -0.82,-132.64)  312.57                80
 09/22/2017   06:37:59   (   0.26,-135.34) (  -0.16,-137.24)  216.04                80
 09/23/2017   06:17:19   (   0.24,-135.36) (   0.94,-132.24)  354.87                80
 09/24/2017   18:33:30   (  -0.26,-135.44) (   0.04,-136.81)  156.08                80
 09/25/2017   18:15:29   (  -0.24,-135.46) (  -1.06,-131.82)  415.05                80
 09/27/2017   06:34:28   (   0.26,-135.41) (   0.02,-136.41)  113.91                80
 09/28/2017   06:11:07   (   0.24,-135.42) (   1.13,-131.41)  456.19                80
 09/29/2017   18:29:59   (  -0.26,-135.48) (  -0.15,-135.98)   56.57                80