Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 13.  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)
 12/14/2017   06:16:24   (   0.13,-135.43) (   0.70,-133.01)  276.97                80
 12/15/2017   18:35:14   (  -0.12,-135.39) (   0.36,-137.56)  247.53                80
 12/16/2017   18:17:13   (  -0.12,-135.39) (  -0.75,-132.57)  321.44                80
 12/18/2017   06:36:11   (   0.11,-135.43) (  -0.30,-137.16)  197.89                80
 12/19/2017   06:12:51   (   0.11,-135.42) (   0.81,-132.16)  370.23                80
 12/20/2017   18:31:41   (  -0.10,-135.36) (   0.19,-136.73)  155.88                80
 12/21/2017   18:13:41   (  -0.10,-135.35) (  -0.92,-131.74)  412.40                80
 12/23/2017   06:32:39   (   0.09,-135.39) (  -0.12,-136.33)  107.44                80
 12/24/2017   06:09:19   (   0.09,-135.37) (   1.00,-131.33)  460.03                80
 12/25/2017   18:28:08   (  -0.08,-135.30) (   0.07,-135.89)   67.58                80
 12/26/2017   18:10:07   (  -0.09,-135.28) (  -1.05,-130.89)  499.98                80