Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/10/2020   10:57:40   (  -0.01,-137.21) (   0.96,-141.56)  495.98                80
 03/11/2020   10:36:05   (  -0.01,-137.21) (  -0.08,-136.98)   26.07                80
 03/13/2020   22:38:48   (   0.01,-137.21) (  -0.11,-137.63)   48.64                80
 03/14/2020   22:22:32   (   0.01,-137.21) (   0.94,-133.06)  472.95                80
 03/16/2020   10:44:03   (  -0.01,-137.20) (   0.24,-138.25)  119.94                80
 03/17/2020   10:22:27   (  -0.01,-137.20) (  -0.80,-133.68)  401.11                80
 03/18/2020   22:44:06   (   0.02,-137.18) (  -0.35,-138.91)  196.63                80
 03/19/2020   22:27:50   (   0.02,-137.18) (   0.63,-134.33)  324.31                80
 03/21/2020   10:49:21   (  -0.02,-137.17) (   0.50,-139.53)  269.23                80
 03/22/2020   10:27:45   (  -0.02,-137.16) (  -0.49,-134.95)  251.49                80
 03/23/2020   22:49:24   (   0.02,-137.14) (  -0.65,-140.18)  346.83                80