Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/07/2019   22:46:12   (   0.00,-137.21) (  -0.38,-138.92)  195.10                80
 11/08/2019   22:27:17   (   0.00,-137.21) (   0.63,-134.34)  326.27                80
 11/10/2019   10:48:48   (  -0.00,-137.21) (   0.54,-139.54)  266.07                80
 11/11/2019   10:27:14   (  -0.00,-137.21) (  -0.53,-134.98)  254.86                80
 11/12/2019   22:48:53   (   0.00,-137.19) (  -0.67,-140.21)  343.97                80
 11/13/2019   22:32:37   (   0.00,-137.18) (   0.34,-135.64)  176.46                80
 11/15/2019   10:51:29   (   0.00,-137.18) (   0.84,-140.84)  417.52                80
 11/16/2019   10:35:13   (   0.00,-137.16) (  -0.17,-136.26)  102.36                80
 11/17/2019   22:54:13   (  -0.01,-137.13) (  -1.01,-141.49)  498.07                80
 11/18/2019   22:37:57   (  -0.02,-137.11) (   0.00,-136.92)   21.59                80