Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 7 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/19/2022   11:11:32   (   0.05,-137.30) (   0.59,-139.79)  283.28                80
 07/20/2022   10:50:27   (   0.05,-137.30) (  -0.37,-135.32)  225.03                80
 07/21/2022   23:15:34   (  -0.05,-137.29) (  -0.81,-140.74)  392.01                80
 07/22/2022   22:54:29   (  -0.04,-137.29) (   0.21,-136.28)  115.89                80
 07/24/2022   11:19:27   (   0.04,-137.29) (   1.02,-141.65)  497.10                80
 07/25/2022   10:58:22   (   0.03,-137.28) (  -0.01,-137.20)   10.58                80
 07/27/2022   23:02:24   (  -0.02,-137.26) (  -0.21,-138.15)  101.35                80
 07/28/2022   22:46:39   (  -0.02,-137.25) (   0.76,-133.68)  405.68                80
 07/30/2022   11:08:56   (   0.03,-137.23) (   0.45,-139.05)  208.15                80
 07/31/2022   10:50:31   (   0.02,-137.22) (  -0.58,-134.60)  298.51                80