Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 12 10.  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)
 12/11/2017   00:56:00   (   0.11,-135.38) (  -0.86,-139.55)  476.72                80
 12/12/2017   00:44:30   (   0.11,-135.38) (  -0.24,-136.74)  156.27                80
 12/13/2017   00:35:40   (   0.10,-135.38) (   0.45,-133.95)  164.19                80
 12/14/2017   00:24:10   (   0.09,-135.38) (   1.07,-131.14)  484.49                80
 12/15/2017   12:54:19   (  -0.11,-135.45) (   0.71,-139.01)  406.75                80
 12/16/2017   12:42:48   (  -0.10,-135.45) (   0.07,-136.21)   86.51                80
 12/17/2017   12:33:58   (  -0.09,-135.45) (  -0.57,-133.40)  233.51                80
 12/20/2017   00:55:34   (   0.10,-135.38) (  -0.64,-138.53)  360.28                80
 12/21/2017   00:41:23   (   0.09,-135.37) (  -0.00,-135.72)   40.99                80
 12/22/2017   00:29:53   (   0.09,-135.36) (   0.63,-132.92)  278.23                80
 12/24/2017   12:51:11   (  -0.10,-135.39) (   0.51,-137.98)  296.20                80