Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/31/2019   06:15:47   (  -0.04, -75.21) (  -0.85, -71.44)  428.80                80
 08/01/2019   18:34:47   (   0.04, -75.24) (  -0.30, -76.69)  165.88                80
 08/02/2019   18:18:33   (   0.04, -75.25) (   0.75, -72.12)  356.89                80
 08/04/2019   06:37:25   (  -0.05, -75.28) (   0.42, -77.33)  234.31                80
 08/05/2019   06:21:11   (  -0.05, -75.30) (  -0.63, -72.76)  288.93                80
 08/06/2019   18:40:10   (   0.05, -75.33) (  -0.57, -78.00)  304.35                80
 08/07/2019   18:23:56   (   0.05, -75.36) (   0.48, -73.43)  219.25                80
 08/09/2019   06:45:28   (  -0.06, -75.39) (   0.70, -78.64)  370.91                80
 08/10/2019   06:23:53   (  -0.06, -75.42) (  -0.35, -74.07)  152.91                80
 08/11/2019   18:45:34   (   0.07, -75.46) (  -0.79, -79.32)  439.51                80
 08/12/2019   18:29:18   (   0.07, -75.49) (   0.21, -74.74)   84.71                80