Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 11 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/05/2019   10:43:28   (   0.00,-137.20) (   0.21,-138.26)  119.94                80
 11/06/2019   10:21:52   (  -0.00,-137.20) (  -0.80,-133.68)  400.84                80
 11/07/2019   22:43:32   (  -0.00,-137.18) (  -0.41,-138.91)  197.64                80
 11/08/2019   22:27:17   (   0.00,-137.18) (   0.66,-134.35)  322.96                80
 11/10/2019   10:48:49   (  -0.00,-137.17) (   0.51,-139.55)  270.90                80
 11/11/2019   10:27:13   (  -0.00,-137.16) (  -0.50,-134.97)  249.23                80
 11/12/2019   22:48:52   (   0.00,-137.13) (  -0.70,-140.21)  350.47                80
 11/13/2019   22:32:37   (   0.00,-137.12) (   0.32,-135.63)  169.19                80
 11/15/2019   10:51:28   (   0.00,-137.10) (   0.86,-140.83)  426.26                80
 11/16/2019   10:35:13   (   0.01,-137.07) (  -0.15,-136.25)   92.87                80
 11/18/2019   22:37:57   (  -0.01,-137.01) (  -0.01,-136.91)   10.38                80