Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2019 5 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2019   10:47:14   (   0.01,-137.21) (   0.40,-139.04)  207.59                80
 05/26/2019   10:25:39   (   0.01,-137.21) (  -0.58,-134.46)  313.12                80
 05/27/2019   22:47:20   (  -0.01,-137.18) (  -0.59,-139.70)  287.58                80
 05/28/2019   22:31:06   (  -0.02,-137.18) (   0.45,-135.13)  233.12                80
 05/30/2019   10:52:37   (   0.01,-137.19) (   0.74,-140.34)  358.69                80
 05/31/2019   10:31:03   (   0.01,-137.18) (  -0.30,-135.77)  161.20                80
 06/01/2019   22:52:44   (  -0.00,-137.14) (  -0.87,-141.02)  441.57                80
 06/02/2019   22:36:29   (  -0.00,-137.13) (   0.17,-136.45)   78.06                80
 06/05/2019   10:39:06   (  -0.00,-137.11) (  -0.02,-137.08)    4.08                80