Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-19
TLE Epoch: 2017 12 18.  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)
 12/19/2017   08:43:38   (   0.01, -75.17) (   0.25, -76.30)  128.53                80
 12/20/2017   08:34:48   (   0.01, -75.17) (  -0.39, -73.49)  191.65                80
 12/22/2017   20:53:44   (  -0.02, -75.22) (  -0.82, -78.62)  388.62                80
 12/23/2017   20:44:53   (  -0.02, -75.22) (  -0.18, -75.81)   68.19                80
 12/24/2017   20:30:44   (  -0.02, -75.23) (   0.52, -73.02)  252.48                80
 12/27/2017   08:54:41   (   0.02, -75.20) (   0.67, -78.07)  327.92                80
 12/28/2017   08:43:10   (   0.02, -75.20) (   0.02, -75.27)    7.11                80
 12/29/2017   08:29:00   (   0.02, -75.21) (  -0.63, -72.46)  314.13                80
 12/31/2017   20:50:36   (  -0.03, -75.28) (  -0.57, -77.59)  264.10                80