Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/19/2020   06:20:56   (   0.04, -75.18) (  -0.43, -73.24)  221.84                80
 03/20/2020   18:42:35   (  -0.04, -75.20) (  -0.79, -78.46)  371.96                80
 03/21/2020   18:26:19   (  -0.04, -75.21) (   0.26, -73.89)  150.46                80
 03/23/2020   06:47:49   (   0.04, -75.20) (   0.93, -79.08)  442.40                80
 03/24/2020   06:26:14   (   0.04, -75.21) (  -0.11, -74.50)   80.30                80
 03/26/2020   18:31:37   (  -0.04, -75.26) (  -0.04, -75.15)   11.34                80
 03/29/2020   06:34:13   (   0.04, -75.28) (   0.14, -75.78)   57.75                80
 03/30/2020   06:12:37   (   0.04, -75.29) (  -0.90, -71.21)  465.46                80
 03/31/2020   18:34:15   (  -0.03, -75.33) (  -0.28, -76.44)  126.64                80
 04/01/2020   18:18:00   (  -0.04, -75.34) (   0.77, -71.86)  396.90                80