Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2020   18:46:14   (   0.04, -75.20) (  -0.79, -78.88)  419.25                80
 09/11/2020   18:29:57   (   0.04, -75.22) (   0.23, -74.29)  104.63                80
 09/13/2020   06:51:28   (  -0.05, -75.23) (   0.90, -79.49)  486.19                80
 09/14/2020   06:29:51   (  -0.05, -75.24) (  -0.12, -74.91)   37.75                80
 09/16/2020   18:32:33   (   0.05, -75.31) (  -0.02, -75.56)   28.51                80
 09/17/2020   18:16:16   (   0.05, -75.33) (   1.00, -70.97)  496.26                80
 09/19/2020   06:37:47   (  -0.05, -75.36) (   0.12, -76.17)   93.04                80
 09/20/2020   06:16:10   (  -0.05, -75.38) (  -0.90, -71.59)  431.79                80
 09/21/2020   18:37:49   (   0.06, -75.44) (  -0.26, -76.82)  157.91                80
 09/22/2020   18:21:32   (   0.06, -75.46) (   0.76, -72.24)  367.21                80