Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 25.  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)
 12/26/2017   18:10:07   (  -0.08,-135.26) (  -1.03,-130.89)  498.01                80
 12/28/2017   06:29:06   (   0.07,-135.29) (   0.05,-135.50)   23.20                80
 12/30/2017   18:27:15   (  -0.07,-135.17) (  -0.11,-135.05)   14.06                80
 01/02/2018   06:22:53   (   0.06,-135.16) (   0.19,-134.66)   58.20                80
 01/03/2018   18:41:42   (  -0.05,-135.06) (   0.87,-139.21)  473.09                80
 01/04/2018   18:23:42   (  -0.05,-135.03) (  -0.24,-134.21)   92.83                80
 01/06/2018   06:42:40   (   0.04,-135.04) (  -0.78,-138.81)  429.07                80
 01/07/2018   06:19:20   (   0.05,-135.01) (   0.34,-133.82)  136.43                80
 01/08/2018   18:38:09   (  -0.04,-134.89) (   0.73,-138.37)  395.71                80