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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2022   22:15:31   (   0.05,-128.35) (   0.22,-127.50)   97.26                80
 01/18/2022   10:16:50   (  -0.04,-128.36) (   0.00,-128.44)   10.04                80
 01/19/2022   10:01:07   (  -0.04,-128.36) (  -1.01,-123.99)  497.37                80
 01/20/2022   22:20:57   (   0.04,-128.36) (  -0.21,-129.42)  121.28                80
 01/21/2022   22:05:14   (   0.04,-128.36) (   0.80,-124.97)  385.74                80
 01/23/2022   10:27:36   (  -0.05,-128.36) (   0.38,-130.37)  229.29                80
 01/24/2022   10:06:33   (  -0.04,-128.35) (  -0.58,-125.91)  277.35                80
 01/25/2022   22:29:02   (   0.05,-128.34) (  -0.63,-131.34)  342.28                80
 01/26/2022   22:13:20   (   0.04,-128.33) (   0.39,-126.90)  164.04                80
 01/28/2022   10:35:41   (  -0.04,-128.32) (   0.86,-132.28)  452.07                80