Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 8 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/28/2019   10:49:30   (  -0.03,-137.20) (   0.54,-139.69)  284.13                80
 08/29/2019   10:27:55   (  -0.03,-137.19) (  -0.52,-135.12)  236.24                80
 08/30/2019   22:49:35   (   0.03,-137.18) (  -0.70,-140.35)  361.91                80
 08/31/2019   22:33:20   (   0.03,-137.17) (   0.36,-135.79)  158.30                80
 09/02/2019   10:54:51   (  -0.03,-137.15) (   0.84,-140.99)  437.15                80
 09/03/2019   10:33:17   (  -0.03,-137.14) (  -0.21,-136.42)   82.75                80
 09/05/2019   22:38:42   (   0.04,-137.11) (   0.05,-137.09)    3.10                80
 09/08/2019   10:41:19   (  -0.04,-137.07) (   0.09,-137.72)   74.42                80
 09/09/2019   10:19:43   (  -0.04,-137.05) (  -0.91,-133.14)  444.58                80