Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 01/14/2018   06:33:34   (   0.02,-134.74) (  -0.17,-135.50)   87.86                80
 01/15/2018   06:10:15   (   0.03,-134.69) (   0.94,-130.51)  476.19                80
 01/16/2018   18:29:06   (  -0.02,-134.57) (   0.10,-135.07)   56.37                80
 01/19/2018   06:30:07   (   0.01,-134.50) (  -0.01,-134.67)   18.93                80
 01/21/2018   18:25:39   (  -0.00,-134.32) (  -0.05,-134.23)   11.45                80
 01/24/2018   06:23:58   (   0.00,-134.23) (   0.09,-133.82)   46.89                80
 01/25/2018   18:42:50   (   0.00,-134.09) (   0.96,-138.37)  488.20                80
 01/26/2018   18:24:50   (  -0.00,-134.03) (  -0.15,-133.38)   74.15                80