Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/06/2020   10:46:19   (  -0.02,-137.19) (   0.35,-138.76)  179.09                80
 04/07/2020   10:24:43   (  -0.02,-137.18) (  -0.70,-134.19)  341.81                80
 04/08/2020   22:46:22   (   0.02,-137.16) (  -0.49,-139.41)  256.29                80
 04/09/2020   22:30:06   (   0.02,-137.15) (   0.56,-134.84)  264.41                80
 04/11/2020   10:51:36   (  -0.02,-137.14) (   0.64,-140.03)  329.10                80
 04/12/2020   10:30:01   (  -0.02,-137.13) (  -0.41,-135.46)  191.02                80
 04/13/2020   22:51:39   (   0.02,-137.09) (  -0.76,-140.68)  408.51                80
 04/14/2020   22:35:23   (   0.02,-137.08) (   0.23,-136.10)  111.55                80
 04/16/2020   10:56:54   (  -0.01,-137.06) (   0.91,-141.30)  482.47                80
 04/17/2020   10:35:18   (  -0.01,-137.04) (  -0.08,-136.71)   37.23                80
 04/19/2020   22:37:59   (   0.00,-136.98) (  -0.10,-137.36)   43.51                80