Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 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)
 03/30/2021   18:35:45   (   0.04, -75.22) (  -0.02, -75.36)   16.64                80
 04/02/2021   06:40:57   (  -0.04, -75.24) (   0.10, -75.97)   82.20                80
 04/03/2021   06:19:19   (  -0.04, -75.24) (  -0.92, -71.38)  441.09                80
 04/04/2021   18:40:56   (   0.03, -75.25) (  -0.25, -76.59)  152.51                80
 04/05/2021   18:24:38   (   0.03, -75.26) (   0.78, -72.00)  371.50                80
 04/07/2021   06:46:06   (  -0.02, -75.28) (   0.39, -77.18)  216.00                80
 04/08/2021   06:24:29   (  -0.02, -75.30) (  -0.64, -72.59)  308.28                80
 04/09/2021   18:46:05   (   0.01, -75.31) (  -0.52, -77.81)  283.99                80
 04/10/2021   18:29:48   (   0.01, -75.33) (   0.51, -73.22)  241.06                80