Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2022   22:52:19   (   0.01,-137.24) (  -0.05,-137.42)   20.87                80
 01/03/2022   22:36:36   (   0.01,-137.24) (   0.96,-132.97)  486.74                80
 01/05/2022   10:56:17   (  -0.01,-137.25) (   0.25,-138.36)  127.23                80
 01/06/2022   10:40:35   (  -0.01,-137.25) (  -0.75,-133.92)  380.04                80
 01/07/2022   23:00:25   (   0.02,-137.26) (  -0.45,-139.35)  238.38                80
 01/08/2022   22:44:43   (   0.02,-137.26) (   0.56,-134.90)  268.93                80
 01/10/2022   11:04:24   (  -0.02,-137.26) (   0.66,-140.29)  345.30                80
 01/11/2022   10:48:42   (  -0.01,-137.26) (  -0.35,-135.85)  161.79                80
 01/12/2022   23:08:31   (  -0.00,-137.26) (  -0.89,-141.27)  457.08                80
 01/13/2022   22:52:48   (  -0.01,-137.25) (   0.06,-136.81)   49.71                80