Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 4 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)
 04/28/2021   06:47:47   (  -0.03, -75.20) (   0.46, -77.45)  256.11                80
 04/29/2021   06:26:10   (  -0.03, -75.20) (  -0.57, -72.86)  267.21                80
 04/30/2021   18:47:45   (   0.02, -75.20) (  -0.64, -78.06)  326.20                80
 05/01/2021   18:31:28   (   0.02, -75.21) (   0.39, -73.47)  197.66                80
 05/03/2021   06:52:56   (  -0.02, -75.23) (   0.77, -78.65)  390.17                80
 05/04/2021   06:31:18   (  -0.02, -75.25) (  -0.26, -74.07)  133.97                80
 05/05/2021   18:52:55   (   0.01, -75.26) (  -0.88, -79.28)  458.32                80
 05/06/2021   18:36:37   (   0.01, -75.28) (   0.15, -74.69)   66.63                80
 05/09/2021   06:36:28   (  -0.01, -75.34) (  -0.02, -75.29)    5.93                80