Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/23/2020   10:56:02   (  -0.00,-137.20) (   0.83,-140.99)  431.96                80
 05/24/2020   10:34:25   (  -0.01,-137.20) (  -0.17,-136.41)   89.61                80
 05/26/2020   22:39:48   (   0.01,-137.18) (   0.02,-137.06)   13.76                80
 05/29/2020   10:42:22   (  -0.00,-137.16) (   0.11,-137.67)   58.62                80
 05/30/2020   10:20:46   (  -0.00,-137.15) (  -0.90,-133.09)  462.04                80
 05/31/2020   22:42:25   (   0.00,-137.13) (  -0.26,-138.32)  136.33                80
 06/01/2020   22:26:08   (   0.00,-137.11) (   0.74,-133.74)  384.06                80
 06/03/2020   10:44:59   (  -0.00,-137.09) (   0.38,-138.94)  210.16                80
 06/04/2020   10:28:42   (   0.00,-137.07) (  -0.62,-134.35)  309.85                80
 06/05/2020   22:47:40   (  -0.01,-137.04) (  -0.59,-139.57)  289.74                80