Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2020   06:40:53   (   0.05, -75.20) (   0.57, -77.50)  262.65                80
 01/21/2020   06:19:18   (   0.05, -75.20) (  -0.46, -72.93)  259.48                80
 01/22/2020   18:43:37   (  -0.06, -75.22) (  -0.74, -78.15)  334.87                80
 01/23/2020   18:22:02   (  -0.06, -75.23) (   0.29, -73.58)  187.69                80
 01/25/2020   06:46:12   (   0.07, -75.24) (   0.89, -78.77)  403.48                80
 01/26/2020   06:24:36   (   0.07, -75.25) (  -0.15, -74.20)  119.46                80
 01/27/2020   18:48:57   (  -0.08, -75.28) (  -1.00, -79.44)  473.64                80
 01/28/2020   18:27:21   (  -0.07, -75.30) (   0.03, -74.87)   49.81                80
 01/31/2020   06:32:36   (   0.08, -75.35) (   0.11, -75.49)   16.06                80