Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2020   10:56:08   (   0.04,-137.20) (   0.86,-140.73)  402.75                80
 08/27/2020   10:34:33   (   0.03,-137.21) (  -0.22,-136.16)  119.86                80
 08/28/2020   22:56:10   (  -0.03,-137.20) (  -0.98,-141.38)  476.04                80
 08/29/2020   22:39:54   (  -0.02,-137.21) (   0.09,-136.81)   46.17                80
 09/01/2020   10:39:48   (  -0.00,-137.22) (   0.04,-137.42)   22.63                80
 09/02/2020   10:23:32   (  -0.00,-137.22) (  -0.98,-132.84)  499.63                80
 09/03/2020   22:42:30   (   0.00,-137.21) (  -0.17,-138.07)   96.71                80
 09/04/2020   22:26:14   (   0.00,-137.21) (   0.85,-133.49)  425.39                80
 09/06/2020   10:45:03   (   0.00,-137.22) (   0.35,-138.67)  165.91                80
 09/07/2020   10:28:47   (   0.00,-137.21) (  -0.73,-134.10)  355.78                80