Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 12 22.  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)
 12/24/2017   12:51:10   (  -0.10,-135.35) (   0.51,-137.98)  300.23                80
 12/25/2017   12:42:20   (  -0.10,-135.33) (  -0.13,-135.17)   18.34                80
 12/26/2017   12:30:50   (  -0.09,-135.32) (  -0.78,-132.37)  336.81                80
 12/29/2017   00:52:25   (   0.10,-135.22) (  -0.44,-137.49)  259.67                80
 12/30/2017   00:38:15   (   0.09,-135.20) (   0.21,-134.69)   57.94                80
 12/31/2017   00:26:44   (   0.09,-135.17) (   0.87,-131.89)  375.35                80
 01/02/2018   12:48:01   (  -0.08,-135.14) (   0.32,-136.94)  205.25                80
 01/03/2018   12:39:10   (  -0.08,-135.11) (  -0.28,-134.12)  111.77                80
 01/04/2018   12:27:39   (  -0.08,-135.07) (  -0.93,-131.32)  428.63                80