RunAsDate 1.41 (64-bit)

January 11, 2026

Additional Information

RunAsDate 64-bit allows you to run Windows programs with a custom date and time without changing your system clock, making it ideal for testing and time-based software.

Latest Version	RunAsDate 1.41 (64-bit)
Requirements	Windows XP64/Vista64/Windows 7 64/Windows 8 64/Windows 10 64
Updated	January 11, 2026
Author	Nir Sofer
Category	Desktop Enhancements
License	Freeware
Language	English
Download	208

Overview

RunAsDate 64-bit is a specialized Windows utility that lets you launch applications as if your computer were running at a different date and time. Instead of changing the system clock, the tool creates a virtual time environment for each selected program, while the real system time remains untouched.

This makes RunAsDate especially useful for testing software, running expired programs, checking time-based features, or troubleshooting applications that depend on specific dates.

What does RunAsDate actually do?

Many programs rely on the Windows clock to validate licenses, activate trials, or unlock features. RunAsDate intercepts how an application reads the current date and time and feeds it with a custom value you choose.

This means:

Your Windows clock stays correct
Other apps work normally
Only the selected program sees the fake date

You can even run multiple programs at the same time, each with a different virtual date.

Key benefits

Safe time simulation

RunAsDate does not modify system settings or BIOS time. This avoids problems with updates, internet connections, or file timestamps.

Perfect for software testing

Developers and IT professionals can test:

License expiration
Trial periods
Subscription behavior
Time-based bugs

without affecting the rest of the system.

Portable and lightweight

RunAsDate is a single executable file. No installation, no drivers, and no extra libraries are required. You can run it from a USB stick or any folder on your PC.

Supports command-line parameters

Advanced users can run programs with specific startup arguments while also controlling the virtual date and time.

How to use RunAsDate

Using the tool is simple:

Launch RunAsDate.exe
Choose the program you want to run
Select a custom date and time
Click “Run”

The application will start as if the system clock were set to your chosen date, while Windows itself continues to use the real time.

Who should use RunAsDate?

RunAsDate is ideal for:

Software testers
Developers
IT support teams
Users running time-restricted software
Anyone needing to simulate past or future dates

Conclusion

RunAsDate 64-bit is a powerful yet simple utility that gives you full control over how applications see time. By isolating the virtual clock to individual programs, it offers a safe and efficient way to test, troubleshoot, and run time-sensitive software on Windows.

If you need to simulate dates without breaking your system clock, RunAsDate is the perfect solution.