Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/14/2022   22:31:14   (   0.05,-128.35) (  -0.75,-131.95)  410.55                80
 01/15/2022   22:15:32   (   0.04,-128.35) (   0.26,-127.51)   97.19                80
 01/18/2022   10:19:30   (  -0.04,-128.36) (  -0.04,-128.45)    9.96                80
 01/19/2022   10:01:07   (  -0.04,-128.36) (  -0.99,-123.99)  497.41                80
 01/20/2022   22:20:57   (   0.04,-128.36) (  -0.17,-129.43)  121.33                80
 01/21/2022   22:05:14   (   0.04,-128.36) (   0.78,-124.97)  385.73                80
 01/23/2022   10:27:36   (  -0.05,-128.36) (   0.39,-130.37)  229.23                80
 01/24/2022   10:09:14   (  -0.04,-128.35) (  -0.62,-125.92)  277.42                80
 01/25/2022   22:29:02   (   0.04,-128.34) (  -0.65,-131.34)  342.27                80
 01/26/2022   22:13:19   (   0.04,-128.33) (   0.37,-126.89)  164.04                80