Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2015 5 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)
 05/21/2015   06:27:30   (   0.10,-135.34) (   0.23,-134.76)   66.26                80
 05/22/2015   18:46:21   (  -0.10,-135.30) (   0.78,-139.33)  458.60                80
 05/23/2015   18:28:20   (  -0.11,-135.28) (  -0.31,-134.33)  108.62                80
 05/25/2015   06:47:20   (   0.11,-135.27) (  -0.71,-138.92)  415.96                80
 05/26/2015   06:24:00   (   0.11,-135.25) (   0.43,-133.93)  150.95                80
 05/27/2015   18:42:51   (  -0.11,-135.20) (   0.62,-138.49)  374.62                80
 05/28/2015   18:24:50   (  -0.11,-135.18) (  -0.47,-133.49)  192.13                80
 05/30/2015   06:43:49   (   0.11,-135.16) (  -0.54,-138.09)  333.19                80
 05/31/2015   06:20:29   (   0.11,-135.13) (   0.55,-133.09)  232.99                80
 06/01/2015   18:41:59   (  -0.11,-135.07) (   0.49,-137.64)  293.89                80
 06/02/2015   18:21:20   (  -0.11,-135.04) (  -0.67,-132.65)  271.90                80