Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/27/2020   10:34:32   (   0.05,-137.20) (  -0.19,-136.15)  119.85                80
 08/28/2020   22:56:10   (  -0.04,-137.20) (  -0.96,-141.38)  476.31                80
 08/29/2020   22:39:54   (  -0.04,-137.20) (   0.06,-136.80)   45.79                80
 09/01/2020   10:39:48   (   0.02,-137.21) (   0.07,-137.41)   23.40                80
 09/02/2020   10:23:31   (   0.02,-137.21) (  -0.95,-132.83)  498.55                80
 09/03/2020   22:42:29   (  -0.02,-137.19) (  -0.20,-138.06)   98.18                80
 09/04/2020   22:26:13   (  -0.02,-137.19) (   0.82,-133.48)  423.67                80
 09/06/2020   10:45:03   (   0.02,-137.19) (   0.33,-138.67)  167.98                80
 09/07/2020   10:28:47   (   0.02,-137.19) (  -0.69,-134.09)  353.46                80
 09/08/2020   22:47:44   (  -0.01,-137.17) (  -0.51,-139.31)  244.52                80
 09/09/2020   22:31:28   (  -0.01,-137.15) (   0.51,-134.72)  276.34                80