Windows 7 and Android – Clock Applications with Deciseconds

It's not necessarily going to speed up time, but it can be useful for debugging.

Nirsoft's RunAsDate

From the site:

RunAsDate is a small utility that allows you to run a program in the date and time that you specify. This utility doesn't change the current system date and time of your computer, but it only injects the date/time that you specify into the desired application. You can run multiple applications simultaneously, each application works with different date and time, while the real date/time of your system continues to run normally.

Check out this link. It sounds like what you are looking for.

http://www.howtogeek.com/howto/9235/change-display-under-the-system-tray-clock-in-windows-7/