Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2017   00:24:10   (   0.10,-135.38) (   1.09,-131.14)  484.43                80
 12/15/2017   12:54:19   (  -0.11,-135.44) (   0.70,-139.01)  407.48                80
 12/16/2017   12:42:49   (  -0.10,-135.44) (   0.06,-136.21)   87.42                80
 12/17/2017   12:33:58   (  -0.10,-135.44) (  -0.58,-133.40)  232.47                80
 12/20/2017   00:55:34   (   0.10,-135.37) (  -0.63,-138.53)  361.30                80
 12/21/2017   00:44:04   (   0.09,-135.36) (   0.01,-135.73)   42.15                80
 12/22/2017   00:29:53   (   0.09,-135.34) (   0.65,-132.92)  276.87                80
 12/24/2017   12:51:11   (  -0.10,-135.37) (   0.50,-137.98)  298.40                80
 12/25/2017   12:42:20   (  -0.09,-135.35) (  -0.15,-135.18)   20.39                80
 12/26/2017   12:30:50   (  -0.09,-135.34) (  -0.79,-132.37)  338.94                80