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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/07/2022   23:00:26   (   0.03,-137.21) (  -0.43,-139.35)  242.87                80
 01/08/2022   22:44:43   (   0.03,-137.21) (   0.57,-134.90)  263.89                80
 01/10/2022   11:07:04   (  -0.03,-137.21) (   0.65,-140.29)  350.84                80
 01/11/2022   10:48:42   (  -0.02,-137.21) (  -0.36,-135.85)  155.63                80
 01/12/2022   23:08:31   (   0.02,-137.19) (  -0.89,-141.27)  464.60                80
 01/13/2022   22:52:48   (   0.00,-137.18) (   0.06,-136.81)   41.76                80
 01/16/2022   10:54:07   (   0.01,-137.15) (   0.17,-137.75)   68.76                80
 01/17/2022   10:35:44   (   0.01,-137.14) (  -0.84,-133.31)  436.47                80
 01/18/2022   22:58:13   (  -0.01,-137.10) (  -0.39,-138.73)  185.48                80
 01/19/2022   22:42:31   (  -0.01,-137.08) (   0.62,-134.28)  319.51                80