Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/30/2021   06:38:04   (  -0.01, -75.20) (   0.08, -75.52)   36.62                80
 05/31/2021   06:21:47   (  -0.00, -75.21) (  -0.96, -70.93)  487.41                80
 06/01/2021   18:40:43   (   0.00, -75.23) (  -0.22, -76.14)  104.44                80
 06/02/2021   18:24:26   (  -0.00, -75.24) (   0.82, -71.56)  420.26                80
 06/04/2021   06:43:13   (  -0.01, -75.27) (   0.34, -76.73)  167.48                80
 06/05/2021   06:26:55   (  -0.00, -75.28) (  -0.70, -72.15)  357.52                80
 06/06/2021   18:45:53   (   0.01, -75.31) (  -0.43, -77.37)  233.37                80
 06/07/2021   18:29:35   (   0.01, -75.34) (   0.62, -72.78)  292.00                80
 06/09/2021   06:48:23   (  -0.02, -75.37) (   0.54, -77.96)  294.80                80
 06/10/2021   06:32:05   (  -0.02, -75.39) (  -0.50, -73.37)  230.64                80