Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2021   18:35:38   (   0.02, -75.21) (  -0.11, -75.67)   52.60                80
 02/01/2021   18:19:22   (   0.02, -75.22) (   0.96, -71.09)  470.82                80
 02/03/2021   06:40:50   (  -0.02, -75.23) (   0.20, -76.27)  118.62                80
 02/04/2021   06:19:12   (  -0.02, -75.24) (  -0.81, -71.68)  404.69                80
 02/05/2021   18:40:50   (   0.03, -75.25) (  -0.37, -76.90)  189.16                80
 02/06/2021   18:24:33   (   0.03, -75.26) (   0.69, -72.32)  334.52                80
 02/08/2021   06:46:02   (  -0.04, -75.28) (   0.45, -77.51)  254.01                80
 02/09/2021   06:24:24   (  -0.04, -75.29) (  -0.56, -72.92)  269.69                80
 02/10/2021   18:46:02   (   0.05, -75.30) (  -0.57, -78.15)  323.67                80
 02/11/2021   18:29:45   (   0.05, -75.32) (   0.44, -73.56)  200.94                80