Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2022   22:07:25   (   0.05,-128.32) (   0.65,-125.58)  312.14                80
 01/12/2022   10:27:06   (  -0.06,-128.33) (   0.57,-130.97)  300.71                80
 01/13/2022   10:11:24   (  -0.05,-128.34) (  -0.44,-126.52)  207.43                80
 01/14/2022   22:31:14   (   0.05,-128.35) (  -0.74,-131.95)  410.13                80
 01/15/2022   22:15:31   (   0.04,-128.36) (   0.21,-127.49)   97.74                80
 01/18/2022   10:19:31   (  -0.04,-128.37) (  -0.04,-128.45)    9.13                80
 01/19/2022   10:01:07   (  -0.03,-128.37) (  -0.99,-123.99)  498.50                80
 01/20/2022   22:20:58   (   0.04,-128.37) (  -0.17,-129.43)  120.14                80
 01/21/2022   22:05:14   (   0.04,-128.37) (   0.78,-124.97)  387.02                80
 01/23/2022   10:24:56   (  -0.04,-128.37) (   0.40,-130.37)  227.72                80