Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 18.  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)
 06/20/2018   06:24:33   (   0.18,-134.80) (   0.03,-135.55)   85.00                80
 06/21/2018   06:01:11   (   0.19,-134.85) (   1.12,-130.55)  488.68                80
 06/22/2018   18:22:41   (  -0.18,-134.92) (  -0.13,-135.12)   23.52                80
 06/25/2018   06:18:18   (   0.17,-135.02) (   0.25,-134.73)   32.66                80
 06/26/2018   18:39:46   (  -0.15,-135.08) (   0.80,-139.29)  480.17                80
 06/27/2018   18:16:25   (  -0.17,-135.11) (  -0.36,-134.30)   92.48                80
 06/29/2018   06:38:03   (   0.15,-135.16) (  -0.68,-138.90)  425.65                80
 06/30/2018   06:14:42   (   0.18,-135.19) (   0.47,-133.91)  146.72                80
 07/01/2018   18:36:10   (  -0.16,-135.25) (   0.57,-138.47)  366.98                80
 07/02/2018   18:12:50   (  -0.18,-135.28) (  -0.59,-133.48)  205.01                80