Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2021   06:39:07   (  -0.01, -75.18) (   0.02, -75.27)   11.31                80
 05/11/2021   18:41:46   (   0.01, -75.21) (  -0.14, -75.90)   78.67                80
 05/12/2021   18:20:09   (   0.02, -75.22) (   0.90, -71.31)  445.47                80
 05/14/2021   06:44:17   (  -0.01, -75.23) (   0.24, -76.49)  143.68                80
 05/15/2021   06:22:38   (  -0.01, -75.24) (  -0.73, -71.89)  380.63                80
 05/16/2021   18:44:15   (   0.01, -75.27) (  -0.42, -77.11)  210.24                80
 05/17/2021   18:27:57   (   0.01, -75.28) (   0.62, -72.52)  314.38                80
 05/19/2021   06:49:26   (  -0.00, -75.30) (   0.52, -77.70)  273.86                80
 05/20/2021   06:27:48   (  -0.00, -75.31) (  -0.52, -73.12)  251.04                80