Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2020   10:48:33   (  -0.02,-137.20) (   0.43,-139.26)  233.88                80
 04/28/2020   10:26:57   (  -0.02,-137.20) (  -0.57,-134.67)  288.16                80
 04/29/2020   22:51:15   (   0.01,-137.20) (  -0.62,-139.90)  308.30                80
 04/30/2020   22:32:20   (   0.01,-137.20) (   0.44,-135.33)  213.38                80
 05/02/2020   10:53:50   (  -0.01,-137.20) (   0.74,-140.52)  378.58                80
 05/03/2020   10:32:15   (  -0.01,-137.19) (  -0.31,-135.94)  142.76                80
 05/04/2020   22:53:53   (   0.01,-137.18) (  -0.88,-141.17)  454.87                80
 05/05/2020   22:37:36   (   0.01,-137.17) (   0.12,-136.58)   66.17                80
 05/08/2020   10:40:11   (  -0.01,-137.15) (   0.00,-137.21)    6.27                80