Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 7 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2020   22:43:34   (  -0.03,-137.20) (  -0.27,-138.43)  139.71                80
 07/29/2020   22:27:17   (  -0.02,-137.20) (   0.74,-133.85)  382.07                80
 07/31/2020   10:48:48   (  -0.02,-137.20) (   0.42,-139.04)  210.83                80
 08/01/2020   10:27:12   (  -0.02,-137.19) (  -0.65,-134.47)  310.76                80
 08/02/2020   22:48:50   (   0.01,-137.18) (  -0.56,-139.69)  286.02                80
 08/03/2020   22:32:33   (   0.01,-137.17) (   0.45,-135.10)  235.45                80
 08/05/2020   10:54:03   (  -0.01,-137.17) (   0.71,-140.30)  357.15                80
 08/06/2020   10:32:28   (  -0.01,-137.16) (  -0.36,-135.73)  164.14                80
 08/07/2020   22:54:05   (   0.01,-137.14) (  -0.85,-140.94)  433.21                80
 08/08/2020   22:37:49   (   0.01,-137.13) (   0.17,-136.36)   87.83                80