Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 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)
 08/29/2021   18:52:02   (   0.13, -75.21) (  -0.55, -78.25)  346.88                80
 08/30/2021   18:35:43   (   0.13, -75.22) (   0.46, -73.66)  176.84                80
 09/01/2021   06:57:12   (  -0.14, -75.22) (   0.66, -78.84)  412.93                80
 09/02/2021   06:35:33   (  -0.14, -75.22) (  -0.34, -74.25)  110.79                80
 09/03/2021   18:57:09   (   0.15, -75.24) (  -0.82, -79.45)  481.29                80
 09/04/2021   18:40:51   (   0.15, -75.25) (   0.25, -74.87)   42.92                80
 09/07/2021   06:43:21   (  -0.15, -75.27) (  -0.14, -75.46)   21.25                80
 09/09/2021   18:43:18   (   0.16, -75.31) (  -0.01, -76.07)   87.26                80
 09/10/2021   18:26:59   (   0.16, -75.32) (   0.99, -71.48)  437.72                80