Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/10/2021   18:46:00   (  -0.01, -75.17) (  -0.70, -78.11)  335.88                80
 02/11/2021   18:29:44   (  -0.01, -75.17) (   0.37, -73.54)  186.70                80
 02/13/2021   06:51:11   (   0.01, -75.17) (   0.83, -78.71)  404.18                80
 02/14/2021   06:29:34   (   0.01, -75.17) (  -0.24, -74.13)  118.80                80
 02/15/2021   18:51:12   (  -0.00, -75.18) (  -0.94, -79.35)  474.43                80
 02/16/2021   18:34:54   (  -0.00, -75.19) (   0.07, -74.76)   49.24                80
 02/19/2021   06:37:25   (   0.00, -75.21) (   0.05, -75.35)   16.61                80
 02/21/2021   18:37:26   (   0.00, -75.24) (  -0.16, -75.99)   85.41                80
 02/22/2021   18:21:08   (   0.01, -75.25) (   0.86, -71.40)  438.59                80