Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 6 27.  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)
 06/28/2017   06:15:40   (   0.15,-135.43) (   0.88,-132.23)  365.31                80
 06/29/2017   18:37:11   (  -0.13,-135.48) (   0.16,-136.79)  149.25                80
 06/30/2017   18:13:51   (  -0.15,-135.48) (  -0.98,-131.80)  419.31                80
 07/02/2017   06:35:31   (   0.13,-135.43) (  -0.08,-136.39)  109.25                80
 07/03/2017   06:12:11   (   0.14,-135.43) (   1.05,-131.40)  459.16                80
 07/04/2017   18:33:41   (  -0.12,-135.46) (  -0.02,-135.96)   55.97                80
 07/07/2017   06:32:01   (   0.12,-135.40) (   0.09,-135.56)   17.94                80
 07/09/2017   18:27:32   (  -0.12,-135.41) (  -0.20,-135.13)   33.41                80
 07/11/2017   06:49:11   (   0.09,-135.35) (  -0.86,-139.72)  497.48                80