Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 4.  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)
 12/04/2017   06:23:29   (   0.16,-135.37) (   0.29,-134.67)   79.20                80
 12/05/2017   18:42:18   (  -0.15,-135.35) (   0.72,-139.23)  442.06                80
 12/06/2017   18:24:17   (  -0.15,-135.36) (  -0.41,-134.23)  128.65                80
 12/08/2017   06:43:16   (   0.14,-135.42) (  -0.61,-138.83)  388.69                80
 12/09/2017   06:19:55   (   0.14,-135.42) (   0.52,-133.84)  181.18                80
 12/10/2017   18:38:44   (  -0.13,-135.39) (   0.55,-138.38)  341.29                80
 12/11/2017   18:20:43   (  -0.13,-135.40) (  -0.59,-133.39)  229.09                80
 12/13/2017   06:39:41   (   0.12,-135.46) (  -0.43,-137.99)  288.13                80
 12/14/2017   06:16:20   (   0.13,-135.46) (   0.65,-132.99)  281.31                80
 12/15/2017   18:35:09   (  -0.12,-135.42) (   0.36,-137.54)  242.57                80
 12/16/2017   18:17:09   (  -0.12,-135.42) (  -0.78,-132.55)  327.17                80