Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 6 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/07/2019   22:39:12   (  -0.00,-137.18) (  -0.14,-137.75)   65.05                80
 06/08/2019   22:22:58   (  -0.01,-137.18) (   0.90,-133.18)  455.80                80
 06/10/2019   10:44:29   (   0.02,-137.20) (   0.29,-138.39)  135.58                80
 06/11/2019   10:22:55   (   0.02,-137.19) (  -0.75,-133.82)  384.74                80
 06/12/2019   22:44:36   (  -0.02,-137.15) (  -0.42,-139.06)  217.22                80
 06/13/2019   22:28:20   (  -0.02,-137.15) (   0.56,-134.48)  302.90                80
 06/15/2019   10:49:53   (   0.01,-137.16) (   0.57,-139.70)  289.46                80
 06/16/2019   10:28:18   (   0.00,-137.15) (  -0.47,-135.13)  230.05                80
 06/17/2019   22:49:59   (   0.00,-137.09) (  -0.75,-140.37)  373.35                80
 06/18/2019   22:33:44   (  -0.00,-137.08) (   0.29,-135.80)  146.13                80
 06/20/2019   10:52:36   (   0.00,-137.09) (   0.85,-141.01)  446.80                80