Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2020   10:41:01   (  -0.02,-137.22) (   0.06,-137.49)   31.76                80
 04/02/2020   10:19:26   (  -0.02,-137.21) (  -0.99,-132.92)  489.44                80
 04/03/2020   22:41:04   (   0.01,-137.19) (  -0.20,-138.14)  108.58                80
 04/04/2020   22:24:48   (   0.01,-137.18) (   0.79,-133.56)  412.46                80
 04/06/2020   10:46:19   (  -0.00,-137.18) (   0.35,-138.76)  180.18                80
 04/07/2020   10:24:43   (  -0.00,-137.17) (  -0.69,-134.19)  340.30                80
 04/08/2020   22:46:22   (   0.01,-137.14) (  -0.49,-139.41)  259.10                80
 04/09/2020   22:30:05   (   0.01,-137.12) (   0.50,-134.83)  261.12                80
 04/11/2020   10:51:37   (  -0.01,-137.11) (   0.65,-140.03)  332.62                80
 04/12/2020   10:30:01   (  -0.02,-137.09) (  -0.40,-135.45)  187.05                80
 04/13/2020   22:51:39   (   0.01,-137.05) (  -0.78,-140.68)  413.73                80
 04/14/2020   22:35:23   (   0.01,-137.03) (   0.22,-136.10)  105.85                80