How to change Windows time

Hi, I have a third party program that does stuff every 600 seconds. I have to wait 600 seconds during development to see if it has done it. I can't configure it - the software is old and the company doesn't exist anymore.  I would rather wait 20 seconds. If I change the Windows time so that the program thinks 600 seconds or more has passed, it works.

Is there a program I can install that can be used to make time go "faster" in Windows, so if I pulled up the Windows clock I would see the second hand whizzing past and fast?

I know this would mean that my Windows clock would be wrong. But I don't care.

I think I would like to configure this program, if one exists, to make time run slowly too, so hopefully any suggestions will also involve some sort of configuration option,

Thank you?

John
John BolterAsked:
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tailoreddigitalCommented:
What software are you using that uses a 600 second loop?   Maybe there is some sort of configuration file (ini, xml, etc...) that can be adjusted in it.
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John BolterAuthor Commented:
Hi, it is a program that was written about 8 years ago by a contractor. All we have is the .exe He has since retired and I believe living in Spain somewhere. Alas we have no documentation.

The program I am writing replaces it. I need to make it do stuff quicker so I can check that what I am coding it to do does the same thing, without the unbearable 600 second day.
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Thomas GrassiSystems AdministratorCommented:
Setup a batch script to set the time

Then add that to your task scheduler  run the script at the time you require
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jcimarronCommented:
John Bolter --
"I know this would mean that my Windows clock would be wrong. But I don't care."
You may find that other features of Windows do not work properly if the time (and date) is not more or less correct.  I think installation of Windows Updates is one, but I cannot remember.  
If you do modify to the Registry (or install a speed up program, I suggest a backup first so you can revert if necessary.
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John BolterAuthor Commented:
Thanks guys. Have a good night
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jcimarronCommented:
John Bolter--
You are welcome.
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