Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-19
TLE Epoch: 2017 12 16.  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)
 12/18/2017   08:55:09   (   0.01, -75.19) (   0.90, -79.10)  446.02                80
 12/19/2017   08:43:38   (   0.02, -75.20) (   0.26, -76.30)  125.21                80
 12/20/2017   08:34:48   (   0.02, -75.20) (  -0.39, -73.49)  195.75                80
 12/22/2017   20:53:44   (  -0.03, -75.27) (  -0.83, -78.62)  382.52                80
 12/23/2017   20:42:13   (  -0.03, -75.28) (  -0.18, -75.81)   61.23                80
 12/24/2017   20:30:44   (  -0.04, -75.30) (   0.52, -73.02)  260.34                80
 12/27/2017   08:54:41   (   0.04, -75.28) (   0.66, -78.07)  318.03                80
 12/28/2017   08:40:30   (   0.04, -75.30) (   0.02, -75.27)    4.30                80
 12/29/2017   08:29:00   (   0.04, -75.31) (  -0.63, -72.47)  325.66                80