Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/03/2020   22:42:28   (  -0.05,-137.18) (  -0.27,-138.04)   98.69                80
 09/04/2020   22:26:13   (  -0.05,-137.17) (   0.80,-133.47)  422.88                80
 09/06/2020   10:45:02   (   0.05,-137.17) (   0.40,-138.65)  170.00                80
 09/07/2020   10:28:46   (   0.05,-137.16) (  -0.62,-134.07)  351.10                80
 09/08/2020   22:47:44   (  -0.04,-137.14) (  -0.53,-139.30)  246.65                80
 09/09/2020   22:31:27   (  -0.04,-137.12) (   0.49,-134.72)  273.90                80
 09/11/2020   10:50:18   (   0.04,-137.10) (   0.65,-139.91)  320.53                80
 09/12/2020   10:34:01   (   0.03,-137.08) (  -0.37,-135.33)  199.40                80
 09/13/2020   22:53:00   (  -0.02,-137.04) (  -0.79,-140.56)  400.26                80
 09/14/2020   22:36:43   (  -0.02,-137.02) (   0.23,-135.98)  119.27                80
 09/16/2020   10:55:32   (   0.01,-136.99) (   0.96,-141.16)  476.33                80