Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2020   10:24:43   (  -0.02,-137.21) (  -0.70,-134.19)  344.40                80
 04/08/2020   22:46:22   (   0.02,-137.21) (  -0.48,-139.41)  251.56                80
 04/09/2020   22:30:06   (   0.02,-137.21) (   0.57,-134.84)  270.44                80
 04/11/2020   10:51:37   (  -0.02,-137.22) (   0.63,-140.03)  321.17                80
 04/12/2020   10:30:01   (  -0.02,-137.21) (  -0.42,-135.46)  200.28                80
 04/13/2020   22:51:39   (   0.02,-137.20) (  -0.76,-140.68)  397.06                80
 04/14/2020   22:35:24   (   0.02,-137.19) (   0.29,-136.11)  124.34                80
 04/16/2020   10:56:54   (  -0.01,-137.20) (   0.91,-141.30)  467.86                80
 04/17/2020   10:35:19   (  -0.01,-137.19) (  -0.14,-136.73)   53.23                80
 04/19/2020   22:38:01   (   0.00,-137.16) (  -0.05,-137.37)   24.03                80
 04/20/2020   22:21:45   (   0.00,-137.15) (   1.01,-132.80)  496.81                80