Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 19.  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   06:24:32   (   0.18,-134.80) (  -0.00,-135.55)   85.12                80
 06/21/2018   06:01:12   (   0.19,-134.85) (   1.15,-130.56)  488.50                80
 06/22/2018   18:22:41   (  -0.18,-134.91) (  -0.16,-135.13)   23.82                80
 06/25/2018   06:18:17   (   0.17,-135.01) (   0.21,-134.72)   32.33                80
 06/26/2018   18:39:46   (  -0.15,-135.07) (   0.78,-139.29)  480.53                80
 06/27/2018   18:16:25   (  -0.17,-135.11) (  -0.32,-134.29)   92.12                80
 06/29/2018   06:38:03   (   0.15,-135.15) (  -0.66,-138.90)  426.32                80
 06/30/2018   06:14:42   (   0.18,-135.19) (   0.44,-133.90)  145.99                80
 07/01/2018   18:36:11   (  -0.15,-135.24) (   0.55,-138.47)  367.67                80
 07/02/2018   18:12:49   (  -0.18,-135.27) (  -0.55,-133.47)  204.27                80