Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 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)
 03/06/2020   10:30:46   (   0.01,-137.21) (  -0.33,-135.70)  171.98                80
 03/07/2020   22:52:25   (  -0.01,-137.20) (  -0.85,-140.94)  425.99                80
 03/08/2020   22:36:10   (  -0.01,-137.19) (   0.20,-136.36)   94.85                80
 03/10/2020   10:57:40   (   0.00,-137.18) (   0.98,-141.56)  498.45                80
 03/11/2020   10:36:05   (   0.00,-137.17) (  -0.06,-136.98)   22.19                80
 03/13/2020   22:38:48   (  -0.00,-137.13) (  -0.12,-137.63)   56.50                80
 03/14/2020   22:22:32   (  -0.00,-137.12) (   0.93,-133.06)  463.60                80
 03/16/2020   10:44:02   (   0.01,-137.10) (   0.26,-138.25)  131.00                80
 03/17/2020   10:22:27   (   0.01,-137.08) (  -0.78,-133.68)  388.61                80
 03/18/2020   22:44:05   (  -0.01,-137.04) (  -0.43,-138.90)  211.54                80
 03/19/2020   22:27:50   (  -0.00,-137.02) (   0.62,-134.32)  307.94                80