Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 13.  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)
 06/15/2018   06:28:07   (   0.17,-134.58) (  -0.25,-136.36)  204.26                80
 06/16/2018   06:04:47   (   0.19,-134.62) (   0.91,-131.38)  369.86                80
 06/17/2018   18:26:16   (  -0.18,-134.70) (   0.09,-135.94)  142.15                80
 06/18/2018   18:02:56   (  -0.19,-134.74) (  -1.06,-130.96)  431.66                80
 06/20/2018   06:24:33   (   0.18,-134.81) (   0.03,-135.55)   84.29                80
 06/21/2018   06:01:11   (   0.19,-134.86) (   1.12,-130.55)  489.55                80
 06/22/2018   18:22:41   (  -0.18,-134.92) (  -0.13,-135.12)   22.61                80
 06/25/2018   06:18:17   (   0.18,-135.03) (   0.25,-134.73)   34.09                80
 06/26/2018   18:39:46   (  -0.16,-135.09) (   0.80,-139.29)  478.64                80
 06/27/2018   18:16:25   (  -0.17,-135.13) (  -0.36,-134.30)   94.14                80