Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 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)
 06/21/2018   06:01:11   (   0.19,-134.84) (   1.12,-130.55)  488.37                80
 06/22/2018   18:22:41   (  -0.18,-134.91) (  -0.13,-135.12)   23.68                80
 06/25/2018   06:18:17   (   0.17,-135.01) (   0.24,-134.73)   31.89                80
 06/26/2018   18:39:46   (  -0.15,-135.07) (   0.81,-139.28)  480.81                80
 06/27/2018   18:16:25   (  -0.17,-135.10) (  -0.35,-134.30)   91.73                80
 06/29/2018   06:38:03   (   0.15,-135.15) (  -0.69,-138.89)  426.88                80
 06/30/2018   06:14:42   (   0.18,-135.18) (   0.47,-133.91)  145.36                80
 07/01/2018   18:36:10   (  -0.15,-135.24) (   0.58,-138.46)  368.22                80
 07/02/2018   18:12:50   (  -0.18,-135.26) (  -0.58,-133.48)  203.67                80
 07/04/2018   06:34:27   (   0.15,-135.30) (  -0.46,-138.07)  315.83                80