[Ham-Mac] setting the Mac clock from a WWV radio signal?

[Ken]

Are there any programs around that will set the Mac clock from the WWV radio signal?  

My Internet connection is satellite and there is a 2-3 second delay on getting the clock signal over the internet.  JT-65 and JT-9 modes require close sync with accurate clocks.   I set it this morning manually from the radio signal but that's somewhat hit and miss.   I'm looking for a software solution.

Thanks,

Ken WA8JXM