Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2019   06:34:59   (   0.00, -75.20) (   0.16, -76.00)   89.88                80
 05/18/2019   06:13:24   (   0.00, -75.21) (  -0.82, -71.42)  431.71                80
 05/19/2019   18:35:05   (  -0.00, -75.22) (  -0.35, -76.66)  164.84                80
 05/20/2019   18:18:50   (  -0.00, -75.23) (   0.68, -72.09)  357.10                80
 05/22/2019   06:40:23   (  -0.00, -75.25) (   0.46, -77.31)  234.74                80
 05/23/2019   06:18:48   (  -0.01, -75.26) (  -0.58, -72.74)  287.31                80
 05/24/2019   18:40:29   (   0.01, -75.28) (  -0.60, -77.99)  308.48                80
 05/25/2019   18:24:15   (   0.01, -75.30) (   0.44, -73.42)  214.17                80
 05/27/2019   06:45:47   (  -0.02, -75.33) (   0.70, -78.63)  376.14                80
 05/28/2019   06:24:12   (  -0.02, -75.35) (  -0.28, -74.05)  146.85                80