Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/08/2022   22:44:42   (   0.03,-137.21) (   0.54,-134.89)  263.79                80
 01/10/2022   11:07:04   (  -0.03,-137.21) (   0.68,-140.28)  350.96                80
 01/11/2022   10:48:41   (  -0.02,-137.20) (  -0.32,-135.84)  155.43                80
 01/12/2022   23:08:31   (   0.02,-137.18) (  -0.92,-141.26)  464.91                80
 01/13/2022   22:52:48   (  -0.00,-137.17) (   0.09,-136.81)   41.34                80
 01/16/2022   10:56:47   (   0.01,-137.15) (   0.14,-137.76)   69.16                80
 01/17/2022   10:35:44   (   0.01,-137.13) (  -0.87,-133.31)  436.02                80
 01/18/2022   22:58:14   (  -0.01,-137.10) (  -0.36,-138.73)  186.09                80
 01/19/2022   22:42:30   (  -0.01,-137.08) (   0.60,-134.27)  318.88                80
 01/21/2022   11:04:53   (   0.01,-137.05) (   0.59,-139.68)  298.58                80