Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 16.  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)
 12/18/2017   18:31:49   (  -0.11,-135.37) (  -0.17,-135.11)   29.87                80
 12/20/2017   06:50:51   (   0.09,-135.41) (  -0.84,-139.71)  489.38                80
 12/21/2017   06:27:31   (   0.10,-135.40) (   0.26,-134.71)   78.22                80
 12/22/2017   18:46:22   (  -0.08,-135.32) (   0.82,-139.26)  449.06                80
 12/23/2017   18:28:23   (  -0.09,-135.31) (  -0.34,-134.27)  118.69                80
 12/25/2017   06:47:23   (   0.07,-135.35) (  -0.72,-138.86)  401.15                80
 12/26/2017   06:24:04   (   0.08,-135.33) (   0.38,-133.87)  165.82                80
 12/27/2017   18:42:55   (  -0.07,-135.24) (   0.65,-138.43)  363.04                80
 12/28/2017   18:24:56   (  -0.08,-135.22) (  -0.45,-133.43)  203.84                80
 12/30/2017   06:43:57   (   0.07,-135.25) (  -0.54,-138.03)  317.12                80