Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/24/2020   22:33:08   (   0.01,-137.22) (   0.36,-135.60)  184.22                80
 03/26/2020   10:54:40   (  -0.01,-137.22) (   0.77,-140.80)  407.77                80
 03/27/2020   10:33:03   (  -0.02,-137.22) (  -0.21,-136.22)  113.56                80
 03/28/2020   22:54:42   (   0.02,-137.21) (  -0.92,-141.45)  483.95                80
 03/29/2020   22:38:27   (   0.02,-137.20) (   0.12,-136.88)   37.15                80
 04/01/2020   10:41:02   (  -0.02,-137.18) (   0.03,-137.50)   36.05                80
 04/02/2020   10:19:25   (  -0.02,-137.16) (  -0.96,-132.91)  484.14                80
 04/03/2020   22:41:04   (   0.01,-137.13) (  -0.23,-138.14)  114.94                80
 04/04/2020   22:24:48   (   0.01,-137.12) (   0.82,-133.57)  405.13                80
 04/06/2020   10:46:18   (  -0.00,-137.10) (   0.39,-138.76)  189.53                80