Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 2 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/13/2020   18:27:02   (  -0.06, -75.21) (   0.18, -74.12)  124.06                80
 02/15/2020   06:48:32   (   0.06, -75.21) (   0.97, -79.32)  468.08                80
 02/16/2020   06:26:57   (   0.06, -75.21) (  -0.06, -74.74)   54.10                80
 02/18/2020   18:29:41   (  -0.07, -75.24) (  -0.10, -75.39)   18.04                80
 02/21/2020   06:34:55   (   0.08, -75.26) (   0.23, -76.02)   86.17                80
 02/22/2020   06:13:19   (   0.08, -75.27) (  -0.75, -71.43)  436.92                80
 02/23/2020   18:34:59   (  -0.08, -75.30) (  -0.38, -76.67)  156.25                80
 02/24/2020   18:16:04   (  -0.08, -75.32) (   0.66, -72.10)  367.43                80
 02/26/2020   06:40:14   (   0.09, -75.35) (   0.51, -77.29)  221.92                80