Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/16/2020   22:40:05   (  -0.02,-137.22) (  -0.02,-137.19)    2.84                80
 11/19/2020   10:42:38   (   0.01,-137.19) (   0.14,-137.80)   68.65                80
 11/20/2020   10:26:21   (   0.01,-137.18) (  -0.90,-133.22)  452.54                80
 11/21/2020   22:45:19   (  -0.01,-137.16) (  -0.29,-138.44)  144.81                80
 11/22/2020   22:29:02   (  -0.01,-137.15) (   0.75,-133.86)  376.30                80
 11/24/2020   10:47:51   (   0.01,-137.14) (   0.41,-139.04)  216.96                80
 11/25/2020   10:31:34   (   0.01,-137.12) (  -0.56,-134.45)  303.96                80
 11/26/2020   22:50:31   (  -0.01,-137.10) (  -0.61,-139.67)  293.89                80
 11/27/2020   22:34:15   (  -0.01,-137.08) (   0.43,-135.09)  226.69                80
 11/29/2020   10:53:04   (   0.01,-137.05) (   0.75,-140.27)  367.70                80