Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2020   10:45:38   (   0.03,-137.19) (   0.27,-138.22)  117.98                80
 08/17/2020   10:26:42   (  -0.00,-137.19) (  -0.80,-133.65)  403.30                80
 08/18/2020   22:45:40   (   0.01,-137.19) (  -0.34,-138.88)  192.25                80
 08/19/2020   22:29:24   (   0.01,-137.19) (   0.68,-134.30)  329.56                80
 08/21/2020   10:48:13   (  -0.00,-137.18) (   0.54,-139.48)  263.58                80
 08/22/2020   10:31:58   (  -0.00,-137.17) (  -0.54,-134.91)  257.91                80
 08/23/2020   22:50:55   (   0.00,-137.16) (  -0.66,-140.13)  338.48                80
 08/24/2020   22:34:39   (   0.00,-137.15) (   0.36,-135.55)  182.50                80
 08/26/2020   10:53:29   (  -0.01,-137.13) (   0.80,-140.74)  411.96                80
 08/27/2020   10:37:12   (  -0.00,-137.11) (  -0.22,-136.16)  108.54                80
 08/28/2020   22:56:10   (   0.00,-137.09) (  -0.97,-141.38)  489.11                80