Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 14.  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)
 12/16/2017   06:33:37   (   0.11,-135.43) (   0.07,-135.54)   12.84                80
 12/18/2017   18:31:49   (  -0.11,-135.37) (  -0.14,-135.10)   30.44                80
 12/20/2017   06:50:50   (   0.09,-135.41) (  -0.87,-139.70)  488.94                80
 12/21/2017   06:27:31   (   0.10,-135.40) (   0.23,-134.71)   78.76                80
 12/22/2017   18:46:22   (  -0.08,-135.33) (   0.80,-139.26)  448.29                80
 12/23/2017   18:28:23   (  -0.09,-135.32) (  -0.30,-134.27)  119.54                80
 12/25/2017   06:47:24   (   0.07,-135.36) (  -0.70,-138.87)  400.26                80
 12/26/2017   06:24:04   (   0.08,-135.34) (   0.40,-133.87)  166.76                80
 12/27/2017   18:42:56   (  -0.07,-135.25) (   0.63,-138.43)  361.85                80
 12/28/2017   18:24:56   (  -0.08,-135.23) (  -0.48,-133.43)  205.11                80