Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2015 5 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)
 05/21/2015   06:27:30   (   0.10,-135.35) (   0.25,-134.77)   66.97                80
 05/22/2015   18:46:20   (  -0.10,-135.30) (   0.81,-139.32)  458.01                80
 05/23/2015   18:28:21   (  -0.10,-135.29) (  -0.33,-134.33)  109.37                80
 05/25/2015   06:47:20   (   0.11,-135.29) (  -0.69,-138.93)  414.61                80
 05/26/2015   06:24:00   (   0.11,-135.27) (   0.40,-133.93)  152.47                80
 05/27/2015   18:42:51   (  -0.11,-135.21) (   0.59,-138.49)  373.14                80
 05/28/2015   18:24:51   (  -0.11,-135.19) (  -0.50,-133.49)  193.78                80
 05/30/2015   06:43:50   (   0.11,-135.18) (  -0.52,-138.09)  330.95                80
 05/31/2015   06:20:29   (   0.11,-135.16) (   0.58,-133.09)  235.43                80