Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 5 15.  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)
 05/17/2018   06:26:21   (   0.15,-135.36) (  -0.10,-136.38)  116.79                80
 05/18/2018   06:08:20   (   0.15,-135.34) (   1.05,-131.39)  450.20                80
 05/19/2018   18:27:10   (  -0.16,-135.32) (  -0.02,-135.95)   71.73                80
 05/20/2018   18:03:48   (  -0.16,-135.30) (  -1.11,-130.95)  494.69                80
 05/22/2018   06:22:46   (   0.16,-135.24) (   0.07,-135.55)   35.39                80
 05/24/2018   18:20:54   (  -0.17,-135.20) (  -0.19,-135.12)    9.11                80
 05/27/2018   06:21:50   (   0.17,-135.11) (   0.25,-134.72)   44.64                80
 05/28/2018   18:40:39   (  -0.16,-135.09) (   0.77,-139.28)  477.85                80
 05/29/2018   18:17:18   (  -0.17,-135.06) (  -0.32,-134.28)   87.77                80