Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-19
TLE Epoch: 2017 12 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/24/2017   20:33:23   (  -0.02, -75.20) (   0.47, -73.01)  249.54                80
 12/27/2017   08:54:41   (   0.01, -75.18) (   0.66, -78.07)  329.90                80
 12/28/2017   08:43:10   (   0.01, -75.19) (   0.01, -75.27)    9.26                80
 12/29/2017   08:29:00   (   0.01, -75.19) (  -0.64, -72.46)  311.91                80
 12/31/2017   20:50:36   (  -0.01, -75.25) (  -0.56, -77.59)  267.87                80
 01/01/2018   20:41:45   (  -0.01, -75.26) (   0.09, -74.79)   53.39                80
 01/02/2018   20:30:15   (  -0.01, -75.27) (   0.75, -71.99)  374.80                80
 01/05/2018   08:51:32   (   0.02, -75.27) (   0.43, -77.04)  202.33                80
 01/06/2018   08:37:21   (   0.02, -75.28) (  -0.22, -74.24)  119.60                80