Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 4 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/29/2021   06:26:10   (  -0.03, -75.20) (  -0.56, -72.86)  267.04                80
 04/30/2021   18:47:46   (   0.02, -75.20) (  -0.59, -78.07)  326.07                80
 05/01/2021   18:31:28   (   0.02, -75.21) (   0.44, -73.48)  197.82                80
 05/03/2021   06:52:57   (  -0.02, -75.23) (   0.73, -78.66)  390.31                80
 05/04/2021   06:31:19   (  -0.02, -75.24) (  -0.31, -74.08)  133.86                80
 05/05/2021   18:52:55   (   0.01, -75.26) (  -0.90, -79.28)  458.17                80
 05/06/2021   18:36:37   (   0.01, -75.28) (   0.13, -74.69)   66.79                80
 05/09/2021   06:36:28   (  -0.01, -75.34) (  -0.00, -75.28)    6.14                80
 05/11/2021   18:39:07   (   0.01, -75.39) (  -0.11, -75.91)   59.72                80
 05/12/2021   18:22:49   (   0.01, -75.41) (   0.92, -71.32)  465.96                80