Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 5 21.  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) (   0.08,-135.55)   34.89                80
 05/24/2018   18:20:55   (  -0.17,-135.21) (  -0.20,-135.12)   10.06                80
 05/27/2018   06:21:50   (   0.17,-135.12) (   0.26,-134.72)   45.30                80
 05/28/2018   18:40:40   (  -0.16,-135.10) (   0.77,-139.28)  476.91                80
 05/29/2018   18:17:18   (  -0.17,-135.06) (  -0.32,-134.28)   88.75                80
 05/31/2018   06:38:55   (   0.17,-134.99) (  -0.71,-138.88)  443.20                80
 06/01/2018   06:15:35   (   0.18,-134.96) (   0.44,-133.89)  122.18                80
 06/02/2018   18:37:04   (  -0.17,-134.93) (   0.59,-138.45)  401.09                80
 06/03/2018   18:13:43   (  -0.18,-134.89) (  -0.50,-133.45)  163.81                80