Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 7 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)
 07/07/2019   10:30:55   (  -0.02,-137.20) (  -0.35,-135.79)  161.67                80
 07/08/2019   22:52:36   (   0.02,-137.18) (  -0.84,-141.03)  438.76                80
 07/09/2019   22:36:20   (   0.02,-137.17) (   0.15,-136.45)   81.80                80
 07/12/2019   10:38:58   (  -0.02,-137.17) (  -0.04,-137.09)    9.21                80
 07/14/2019   22:39:04   (   0.03,-137.12) (  -0.09,-137.77)   72.73                80
 07/15/2019   22:22:48   (   0.02,-137.11) (   0.90,-133.19)  447.01                80
 07/17/2019   10:41:41   (  -0.03,-137.11) (   0.27,-138.40)  146.86                80
 07/18/2019   10:25:26   (  -0.03,-137.10) (  -0.78,-133.83)  372.50                80
 07/19/2019   22:44:26   (   0.03,-137.05) (  -0.44,-139.06)  230.10                80
 07/20/2019   22:28:11   (   0.03,-137.03) (   0.61,-134.50)  289.17                80