Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 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)
 09/13/2020   06:51:27   (  -0.05, -75.17) (   0.94, -79.48)  491.96                80
 09/14/2020   06:29:50   (  -0.05, -75.17) (  -0.09, -74.90)   30.45                80
 09/16/2020   18:32:33   (   0.05, -75.20) (   0.00, -75.56)   40.47                80
 09/17/2020   18:16:17   (   0.05, -75.21) (   1.02, -70.98)  482.64                80
 09/19/2020   06:37:46   (  -0.05, -75.21) (   0.16, -76.17)  109.01                80
 09/20/2020   06:16:10   (  -0.05, -75.22) (  -0.87, -71.58)  414.17                80
 09/21/2020   18:37:48   (   0.06, -75.25) (  -0.30, -76.81)  178.29                80
 09/22/2020   18:21:31   (   0.06, -75.26) (   0.72, -72.23)  345.12                80
 09/24/2020   06:43:02   (  -0.06, -75.27) (   0.39, -77.43)  245.82                80
 09/25/2020   06:21:25   (  -0.07, -75.28) (  -0.63, -72.85)  277.76                80