Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 7 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/31/2020   10:48:47   (   0.03,-137.19) (   0.46,-139.03)  210.09                80
 08/01/2020   10:27:11   (   0.03,-137.19) (  -0.61,-134.46)  311.23                80
 08/02/2020   22:48:50   (   0.01,-137.17) (  -0.54,-139.69)  286.56                80
 08/03/2020   22:32:33   (   0.01,-137.17) (   0.48,-135.11)  234.76                80
 08/05/2020   10:51:24   (  -0.00,-137.16) (   0.68,-140.30)  357.97                80
 08/06/2020   10:35:07   (  -0.00,-137.15) (  -0.33,-135.72)  163.27                80
 08/07/2020   22:54:04   (  -0.00,-137.13) (  -0.87,-140.94)  434.17                80
 08/08/2020   22:37:48   (  -0.00,-137.12) (   0.15,-136.36)   86.86                80
 08/11/2020   10:37:42   (   0.00,-137.09) (  -0.00,-136.97)   14.00                80
 08/13/2020   22:40:24   (   0.01,-137.04) (  -0.11,-137.62)   65.27                80