Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2020   06:35:15   (   0.01, -75.19) (   0.03, -75.24)    6.51                80
 12/04/2020   18:35:16   (  -0.01, -75.19) (  -0.15, -75.88)   78.00                80
 12/05/2020   18:18:59   (  -0.01, -75.20) (   0.90, -71.30)  444.76                80
 12/07/2020   06:40:28   (   0.00, -75.20) (   0.27, -76.49)  146.75                80
 12/08/2020   06:18:51   (   0.00, -75.20) (  -0.71, -71.90)  376.13                80
 12/09/2020   18:40:28   (  -0.00, -75.22) (  -0.44, -77.12)  216.91                80
 12/10/2020   18:24:12   (  -0.00, -75.23) (   0.61, -72.54)  306.54                80
 12/12/2020   06:45:41   (  -0.00, -75.24) (   0.56, -77.72)  283.66                80
 12/13/2020   06:24:05   (  -0.00, -75.24) (  -0.48, -73.14)  239.61                80
 12/14/2020   18:45:42   (   0.01, -75.26) (  -0.66, -78.37)  353.35                80
 12/15/2020   18:29:24   (   0.02, -75.27) (   0.33, -73.78)  170.40                80