Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 9 11.  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)
 09/12/2017   06:42:21   (   0.23,-135.14) (  -0.58,-138.90)  427.80                80
 09/13/2017   06:24:20   (   0.21,-135.16) (   0.52,-133.90)  144.22                80
 09/14/2017   18:40:31   (  -0.23,-135.27) (   0.47,-138.47)  364.09                80
 09/15/2017   18:22:31   (  -0.22,-135.30) (  -0.63,-133.47)  208.09                80
 09/17/2017   06:41:29   (   0.24,-135.25) (  -0.41,-138.06)  320.74                80
 09/18/2017   06:20:13   (   0.23,-135.27) (   0.69,-133.06)  250.67                44
 09/19/2017   18:37:01   (  -0.25,-135.37) (   0.23,-137.65)  258.81                80
 09/20/2017   18:19:01   (  -0.24,-135.39) (  -0.87,-132.65)  313.08                80
 09/22/2017   06:37:59   (   0.26,-135.35) (  -0.17,-137.24)  215.46                80
 09/23/2017   06:14:39   (   0.24,-135.36) (   0.93,-132.24)  355.50                80
 09/24/2017   18:33:30   (  -0.26,-135.45) (   0.05,-136.81)  155.30                80
 09/25/2017   18:15:29   (  -0.24,-135.47) (  -1.05,-131.81)  415.93                80