Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 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)
 09/01/2020   10:42:27   (   0.04,-137.19) (   0.08,-137.41)   24.03                80
 09/02/2020   10:20:51   (   0.04,-137.19) (  -0.94,-132.83)  497.63                80
 09/03/2020   22:42:29   (  -0.04,-137.18) (  -0.21,-138.05)   99.38                80
 09/04/2020   22:26:13   (  -0.04,-137.17) (   0.81,-133.47)  422.18                80
 09/06/2020   10:45:02   (   0.04,-137.17) (   0.39,-138.66)  170.21                80
 09/07/2020   10:28:46   (   0.04,-137.16) (  -0.63,-134.07)  350.89                80
 09/08/2020   22:47:44   (  -0.03,-137.13) (  -0.52,-139.30)  247.39                80
 09/09/2020   22:31:27   (  -0.03,-137.12) (   0.51,-134.72)  273.15                80
 09/11/2020   10:50:18   (   0.02,-137.10) (   0.63,-139.92)  320.83                80
 09/12/2020   10:34:01   (   0.02,-137.08) (  -0.39,-135.34)  199.10                80
 09/13/2020   22:52:59   (  -0.01,-137.04) (  -0.82,-140.55)  401.08                80