Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/21/2020   22:39:10   (  -0.03,-137.22) (  -0.03,-137.10)   12.31                80
 02/24/2020   10:41:44   (   0.03,-137.20) (   0.16,-137.73)   60.49                80
 02/25/2020   10:20:09   (   0.03,-137.19) (  -0.88,-133.15)  460.48                80
 02/26/2020   22:41:48   (  -0.03,-137.19) (  -0.31,-138.38)  136.44                80
 02/27/2020   22:25:33   (  -0.03,-137.18) (   0.73,-133.81)  384.33                80
 02/29/2020   10:47:03   (   0.03,-137.16) (   0.44,-139.00)  210.36                80
 03/01/2020   10:25:28   (   0.03,-137.14) (  -0.59,-134.43)  309.87                80
 03/02/2020   22:47:07   (  -0.04,-137.13) (  -0.59,-139.66)  288.50                80
 03/03/2020   22:30:50   (  -0.04,-137.11) (   0.40,-135.07)  231.28                80