Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/11/2022   11:11:15   (   0.02,-137.18) (   0.69,-140.06)  329.24                80
 06/12/2022   10:50:11   (   0.01,-137.17) (  -0.31,-135.60)  177.47                80
 06/13/2022   23:15:17   (  -0.02,-137.14) (  -0.91,-141.01)  441.62                80
 06/14/2022   22:54:13   (  -0.01,-137.13) (   0.09,-136.55)   64.56                80
 06/17/2022   11:00:47   (   0.01,-137.08) (   0.11,-137.48)   45.59                80
 06/18/2022   10:39:43   (   0.00,-137.06) (  -0.90,-133.02)  460.23                80
 06/19/2022   23:04:49   (  -0.01,-137.03) (  -0.31,-138.43)  159.75                80
 06/20/2022   22:43:45   (  -0.01,-137.01) (   0.69,-133.98)  346.14                80
 06/22/2022   11:08:43   (   0.01,-136.98) (   0.56,-139.35)  270.00                80
 06/23/2022   10:47:39   (   0.01,-136.96) (  -0.45,-134.89)  235.57                80