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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/08/2019   10:25:22   (  -0.04,-137.21) (  -0.67,-134.48)  311.17                80
 08/09/2019   22:47:01   (   0.04,-137.20) (  -0.53,-139.72)  287.50                80
 08/10/2019   22:30:47   (   0.04,-137.19) (   0.52,-135.15)  233.20                80
 08/12/2019   10:49:39   (  -0.05,-137.20) (   0.66,-140.36)  360.31                80
 08/13/2019   10:33:24   (  -0.05,-137.19) (  -0.40,-135.79)  160.08                80
 08/14/2019   22:52:24   (   0.06,-137.17) (  -0.81,-141.02)  439.57                80
 08/15/2019   22:36:09   (   0.06,-137.16) (   0.24,-136.46)   80.70                80
 08/18/2019   10:36:06   (  -0.06,-137.15) (  -0.06,-137.09)    6.74                80
 08/20/2019   22:38:51   (   0.07,-137.11) (  -0.09,-137.76)   74.16                80
 08/21/2019   22:22:36   (   0.06,-137.09) (   0.96,-133.19)  445.30                80