Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 9 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/20/2022   10:07:42   (   0.32,-127.85) (  -0.55,-124.05)  433.66                80
 09/21/2022   22:30:07   (  -0.30,-127.83) (  -0.67,-129.45)  184.83                80
 09/22/2022   22:14:21   (  -0.31,-127.87) (   0.33,-124.99)  327.29                80
 09/24/2022   10:34:00   (   0.29,-127.98) (   0.81,-130.38)  273.06                80
 09/25/2022   10:15:34   (   0.29,-128.01) (  -0.19,-125.92)  238.54                80
 09/26/2022   22:38:00   (  -0.27,-127.98) (  -1.02,-131.32)  381.25                80
 09/27/2022   22:22:14   (  -0.28,-128.00) (  -0.01,-126.86)  130.48                80
 09/29/2022   10:41:51   (   0.26,-128.11) (   1.22,-132.23)  470.18                80
 09/30/2022   10:23:26   (   0.27,-128.13) (   0.22,-127.77)   40.68                80
 10/02/2022   22:27:26   (  -0.26,-128.09) (  -0.40,-128.72)   71.04                80
 10/03/2022   22:11:40   (  -0.26,-128.11) (   0.62,-124.26)  439.36                80