Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 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)
 02/01/2021   18:19:21   (   0.01, -75.21) (   0.94, -71.09)  470.24                80
 02/03/2021   06:40:50   (  -0.02, -75.21) (   0.21, -76.27)  120.35                80
 02/04/2021   06:19:12   (  -0.02, -75.21) (  -0.80, -71.68)  402.38                80
 02/05/2021   18:40:50   (   0.00, -75.22) (  -0.39, -76.90)  191.57                80
 02/06/2021   18:24:32   (  -0.01, -75.22) (   0.62, -72.31)  331.83                80
 02/08/2021   06:46:00   (   0.01, -75.23) (   0.53, -77.49)  257.86                80
 02/09/2021   06:24:24   (   0.01, -75.24) (  -0.54, -72.91)  265.24                80
 02/10/2021   18:46:01   (  -0.00, -75.25) (  -0.65, -78.13)  328.59                80
 02/11/2021   18:29:44   (  -0.00, -75.26) (   0.36, -73.54)  195.38                80
 02/13/2021   06:51:12   (  -0.00, -75.28) (   0.79, -78.72)  392.29                80
 02/14/2021   06:29:36   (  -0.00, -75.30) (  -0.28, -74.14)  132.02                80