Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 7 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2022   22:41:12   (  -0.03,-137.19) (   0.86,-133.26)  448.28                80
 07/03/2022   11:06:11   (   0.04,-137.19) (   0.37,-138.63)  165.27                80
 07/04/2022   10:45:06   (   0.04,-137.18) (  -0.65,-134.18)  342.10                80
 07/05/2022   23:10:12   (  -0.04,-137.17) (  -0.58,-139.59)  275.73                80
 07/06/2022   22:49:08   (  -0.04,-137.16) (   0.44,-135.13)  231.29                80
 07/08/2022   11:14:06   (   0.04,-137.14) (   0.78,-140.51)  383.45                80
 07/09/2022   10:53:02   (   0.03,-137.12) (  -0.24,-136.05)  122.95                80
 07/10/2022   23:18:08   (  -0.03,-137.10) (  -0.99,-141.46)  496.93                80
 07/11/2022   22:59:43   (  -0.02,-137.07) (  -0.03,-136.99)    9.22                80
 07/14/2022   11:03:36   (   0.00,-137.02) (   0.21,-137.92)  102.78                80