Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/13/2020   22:40:24   (  -0.03,-137.18) (  -0.09,-137.62)   48.90                80
 08/14/2020   22:21:28   (  -0.02,-137.18) (   0.92,-133.04)  473.07                80
 08/16/2020   10:45:38   (  -0.02,-137.18) (   0.24,-138.23)  120.64                80
 08/17/2020   10:26:43   (  -0.02,-137.17) (  -0.83,-133.66)  401.04                80
 08/18/2020   22:45:40   (   0.01,-137.16) (  -0.37,-138.88)  195.26                80
 08/19/2020   22:29:24   (   0.01,-137.16) (   0.65,-134.30)  326.02                80
 08/21/2020   10:48:14   (  -0.01,-137.14) (   0.51,-139.49)  267.56                80
 08/22/2020   10:31:57   (  -0.00,-137.13) (  -0.50,-134.91)  253.37                80
 08/23/2020   22:50:55   (   0.00,-137.11) (  -0.70,-140.13)  344.05                80
 08/24/2020   22:34:38   (   0.00,-137.10) (   0.32,-135.54)  176.50                80
 08/26/2020   10:53:28   (  -0.00,-137.07) (   0.84,-140.74)  418.35                80