RunAsDate

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.

How does it work ?
RunAsDate intercepts the kernel API calls that returns the current date
and time (GetSystemTime, GetLocalTime, GetSystemTimeAsFileTime), and
replaces the current date/time with the date/time that you specify.

RunAsDate Limitations:
♦ RunAsDate only works on 32-bit Windows applications. You cannot use
it for old DOS 16-bit programs or for 64-bit Windows applications.
♦ RunAsDate will not affect applications that take the current
date/time from another source. For example: application that loads the
current date from remote server.

System Requirements:
RunAsDate works under Windows 2000, Windows XP, Windows Server 2003,
Windows Server 2008, Windows Vista, and Windows 7. Older versions of
Windows are not supported. The is also x64 version available in a
separated download, for using with x64 applications.