Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2019   06:12:52   (   0.01, -75.19) (  -0.86, -71.42)  430.74                80
 09/07/2019   18:34:33   (  -0.01, -75.17) (  -0.32, -76.66)  168.43                80
 09/08/2019   18:18:17   (  -0.02, -75.17) (   0.68, -72.08)  351.97                80
 09/10/2019   06:39:49   (   0.02, -75.16) (   0.51, -77.28)  241.75                80
 09/11/2019   06:18:14   (   0.02, -75.16) (  -0.55, -72.72)  278.99                80
 09/12/2019   18:39:54   (  -0.03, -75.15) (  -0.63, -77.96)  319.03                80
 09/13/2019   18:23:39   (  -0.03, -75.15) (   0.37, -73.38)  202.19                80
 09/15/2019   06:45:10   (   0.03, -75.16) (   0.81, -78.58)  390.09                80
 09/16/2019   06:23:36   (   0.03, -75.17) (  -0.25, -74.02)  131.42                80
 09/17/2019   18:47:56   (  -0.03, -75.17) (  -0.93, -79.26)  465.68                80
 09/18/2019   18:26:21   (  -0.03, -75.18) (   0.07, -74.68)   56.10                80