Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2020   18:38:19   (  -0.05, -75.20) (  -0.41, -76.88)  191.76                80
 01/18/2020   18:16:43   (  -0.05, -75.20) (   0.62, -72.31)  330.08                80
 01/20/2020   06:40:53   (   0.06, -75.20) (   0.56, -77.50)  262.15                80
 01/21/2020   06:19:18   (   0.06, -75.21) (  -0.47, -72.93)  259.86                80
 01/22/2020   18:43:37   (  -0.07, -75.22) (  -0.73, -78.16)  334.98                80
 01/23/2020   18:22:02   (  -0.07, -75.23) (   0.30, -73.58)  187.46                80
 01/25/2020   06:46:12   (   0.08, -75.24) (   0.87, -78.78)  403.43                80
 01/26/2020   06:24:37   (   0.07, -75.25) (  -0.16, -74.20)  119.35                80
 01/27/2020   18:48:56   (  -0.08, -75.28) (  -1.04, -79.43)  474.26                80
 01/28/2020   18:27:20   (  -0.08, -75.29) (  -0.01, -74.86)   49.18                80