Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2022   22:42:31   (   0.03,-137.21) (   0.66,-134.29)  333.04                80
 01/21/2022   11:04:54   (  -0.03,-137.22) (   0.51,-139.69)  281.17                80
 01/22/2022   10:43:51   (  -0.03,-137.22) (  -0.50,-135.24)  225.74                80
 01/23/2022   23:06:20   (   0.03,-137.21) (  -0.72,-140.66)  393.51                80
 01/24/2022   22:50:37   (   0.03,-137.20) (   0.23,-136.21)  113.12                80
 01/27/2022   10:51:56   (  -0.02,-137.19) (  -0.01,-137.15)    4.52                80
 01/29/2022   22:56:02   (  -0.02,-137.14) (  -0.24,-138.12)  111.02                80
 01/30/2022   22:40:19   (  -0.01,-137.13) (   0.78,-133.67)  394.18                80
 02/01/2022   11:02:40   (   0.01,-137.11) (   0.47,-139.06)  222.91                80