Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 5 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2020   18:38:43   (   0.01, -75.19) (  -0.49, -77.41)  253.61                80
 05/13/2020   18:22:27   (   0.01, -75.19) (   0.56, -72.84)  268.57                80
 05/15/2020   06:43:57   (  -0.01, -75.19) (   0.65, -78.02)  323.78                80
 05/16/2020   06:22:21   (  -0.01, -75.19) (  -0.41, -73.45)  198.68                80
 05/17/2020   18:44:00   (   0.01, -75.22) (  -0.80, -78.67)  394.85                80
 05/18/2020   18:27:44   (   0.01, -75.23) (   0.26, -74.10)  128.24                80
 05/20/2020   06:49:14   (  -0.00, -75.24) (   0.89, -79.30)  462.50                80
 05/21/2020   06:27:38   (  -0.01, -75.25) (  -0.11, -74.71)   60.60                80
 05/23/2020   18:30:21   (   0.00, -75.29) (  -0.04, -75.36)    9.58                80