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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2020   18:41:16   (  -0.02, -75.19) (  -0.59, -77.61)  276.35                80
 01/02/2020   18:19:40   (  -0.02, -75.19) (   0.44, -73.04)  245.07                80
 01/04/2020   06:43:51   (   0.03, -75.19) (   0.72, -78.24)  347.43                80
 01/05/2020   06:22:16   (   0.02, -75.20) (  -0.31, -73.67)  174.22                80
 01/06/2020   18:46:35   (  -0.03, -75.20) (  -0.87, -78.90)  421.56                80
 01/07/2020   18:25:00   (  -0.03, -75.20) (   0.16, -74.32)  100.26                80
 01/09/2020   06:49:11   (   0.04, -75.21) (   0.99, -79.53)  491.61                80
 01/10/2020   06:27:36   (   0.04, -75.21) (  -0.04, -74.95)   30.29                80
 01/12/2020   18:32:59   (  -0.04, -75.23) (  -0.11, -75.61)   43.25                80
 01/13/2020   18:11:24   (  -0.03, -75.24) (   0.92, -71.04)  478.99                80