Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 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)
 05/22/2018   06:22:46   (   0.17,-135.25) (   0.12,-135.56)   34.86                80
 05/24/2018   18:20:54   (  -0.17,-135.21) (  -0.19,-135.12)    9.89                80
 05/27/2018   06:21:50   (   0.17,-135.12) (   0.24,-134.71)   45.62                80
 05/28/2018   18:40:39   (  -0.16,-135.10) (   0.78,-139.28)  476.74                80
 05/29/2018   18:17:19   (  -0.17,-135.07) (  -0.36,-134.29)   88.97                80
 05/31/2018   06:38:56   (   0.17,-134.99) (  -0.67,-138.89)  442.77                80
 06/01/2018   06:15:35   (   0.18,-134.96) (   0.42,-133.89)  122.63                80
 06/02/2018   18:37:04   (  -0.17,-134.93) (   0.60,-138.45)  400.70                80
 06/03/2018   18:13:43   (  -0.18,-134.89) (  -0.49,-133.45)  164.24                80