In the Firewall, what is "Network Time"?

I looked in the help, I searched Google, the support forums here, and looked everywhere I could find.
If you go to the firewall, you will see that enabled (by default I believe) is "Network Time". What exactly does this do, and should I allow it to run?
Thank you very much for your time!

Never mind! Sorry! lol. I didn't realize I had my search limited to in the past 90 days... just found out that was on option. Sorry again!

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Hi Windings,
I 've tried your solution for the "Error 1609" problem, but NO succes...
Maybe it's because I can't fully follow your guide: You say:
Quote
8. Press "Add", and then close Computer Management.
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[EDIT] Updated the pics URL [/EDIT]

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