Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-19
TLE Epoch: 2017 12 28.  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)
 12/29/2017   08:29:00   (   0.01, -75.17) (  -0.62, -72.46)  309.82                80
 12/31/2017   20:50:35   (  -0.02, -75.19) (  -0.58, -77.59)  274.22                80
 01/01/2018   20:41:45   (  -0.03, -75.19) (   0.08, -74.79)   45.92                80
 01/02/2018   20:30:15   (  -0.03, -75.19) (   0.73, -71.98)  366.18                80
 01/05/2018   08:51:31   (   0.04, -75.17) (   0.46, -77.03)  212.50                80
 01/06/2018   08:37:21   (   0.04, -75.17) (  -0.20, -74.23)  108.32                80
 01/07/2018   08:25:50   (   0.04, -75.18) (  -0.85, -71.43)  429.30                80
 01/08/2018   20:58:56   (  -0.04, -75.22) (  -1.00, -79.36)  472.41                80
 01/09/2018   20:47:25   (  -0.05, -75.23) (  -0.33, -76.55)  150.82                80
 01/10/2018   20:38:34   (  -0.05, -75.24) (   0.28, -73.74)  170.99                80
 01/11/2018   20:27:03   (  -0.05, -75.26) (   0.94, -70.94)  492.87                80