Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/02/2021   18:24:26   (   0.01, -75.24) (   0.85, -71.56)  419.49                80
 06/04/2021   06:45:53   (  -0.01, -75.25) (   0.31, -76.73)  169.27                80
 06/05/2021   06:24:16   (  -0.01, -75.26) (  -0.73, -72.15)  355.41                80
 06/06/2021   18:45:52   (   0.02, -75.29) (  -0.45, -77.36)  235.35                80
 06/07/2021   18:29:35   (   0.02, -75.31) (   0.59, -72.77)  289.67                80
 06/09/2021   06:51:02   (  -0.03, -75.33) (   0.57, -77.95)  298.10                80
 06/10/2021   06:32:05   (  -0.03, -75.35) (  -0.48, -73.36)  226.99                80
 06/11/2021   18:51:01   (   0.03, -75.39) (  -0.71, -78.57)  363.44                80
 06/12/2021   18:34:43   (   0.03, -75.41) (   0.33, -73.98)  162.01                80
 06/14/2021   06:53:31   (  -0.03, -75.44) (   0.82, -79.16)  424.89                80
 06/15/2021   06:37:13   (  -0.03, -75.46) (  -0.22, -74.57)  100.76                80