Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2020   18:29:57   (   0.04, -75.18) (   0.21, -74.29)  101.10                80
 09/13/2020   06:51:27   (  -0.05, -75.17) (   0.92, -79.49)  492.04                80
 09/14/2020   06:29:51   (  -0.05, -75.17) (  -0.10, -74.91)   30.22                80
 09/16/2020   18:32:33   (   0.05, -75.20) (  -0.04, -75.55)   40.68                80
 09/17/2020   18:16:16   (   0.05, -75.21) (   0.98, -70.97)  482.29                80
 09/19/2020   06:37:46   (  -0.05, -75.21) (   0.14, -76.17)  109.34                80
 09/20/2020   06:16:10   (  -0.05, -75.22) (  -0.88, -71.59)  413.84                80
 09/21/2020   18:37:48   (   0.06, -75.24) (  -0.28, -76.82)  178.78                80
 09/22/2020   18:21:32   (   0.06, -75.26) (   0.74, -72.23)  344.60                80
 09/24/2020   06:43:01   (  -0.06, -75.26) (   0.43, -77.42)  246.27                80