Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/01/2021   18:39:57   (   0.01, -75.23) (   0.23, -74.16)  121.13                80
 11/03/2021   07:01:23   (  -0.01, -75.21) (   0.90, -79.33)  469.13                80
 11/04/2021   06:39:45   (   0.00, -75.21) (  -0.12, -74.74)   53.95                80
 11/06/2021   18:42:21   (  -0.01, -75.20) (  -0.03, -75.35)   16.53                80
 11/09/2021   06:47:28   (   0.02, -75.19) (   0.19, -75.91)   83.31                80
 11/10/2021   06:25:50   (   0.01, -75.18) (  -0.84, -71.32)  439.86                80
 11/11/2021   18:50:05   (  -0.01, -75.19) (  -0.33, -76.53)  152.75                80
 11/12/2021   18:28:27   (  -0.01, -75.19) (   0.70, -71.93)  371.19                80
 11/14/2021   06:52:33   (   0.02, -75.20) (   0.44, -77.10)  216.83                80