Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2020   10:48:33   (  -0.02,-137.20) (   0.47,-139.25)  234.03                80
 04/28/2020   10:26:57   (  -0.02,-137.20) (  -0.59,-134.68)  287.95                80
 04/29/2020   22:51:16   (   0.01,-137.19) (  -0.60,-139.90)  308.62                80
 04/30/2020   22:31:02   (   0.01,-137.19) (   0.46,-135.33)  213.00                 2
 05/02/2020   10:53:50   (  -0.01,-137.19) (   0.73,-140.52)  379.10                80
 05/03/2020   10:32:14   (  -0.01,-137.19) (  -0.27,-135.94)  142.15                80
 05/04/2020   22:53:52   (   0.01,-137.17) (  -0.91,-141.16)  455.57                80
 05/05/2020   22:37:37   (   0.01,-137.16) (   0.14,-136.59)   65.37                80
 05/08/2020   10:37:32   (  -0.01,-137.14) (  -0.02,-137.21)    7.94                80