Download: Runasdate

: The safest and most direct source. Softpedia : Offers verified mirror downloads. Uptodown : A popular alternative for Windows utilities. SourceForge : Provides community-hosted versions. Key Features & How It Works

: Ideal for developers testing how an app behaves on specific dates, such as leap years or end-of-year rollovers. Download runasdate

: An option to inject the date immediately as the process starts, which is often required for time-sensitive software. Common Use Cases : The safest and most direct source

The utility, developed by NirSoft, is a lightweight tool that allows you to run a specific application with a custom date and time without changing your computer’s system clock. Download Sources SourceForge : Provides community-hosted versions

: It is a portable tool; just extract the ZIP file and run the executable.

: Browse for the .exe file you want to run. Set the Date/Time : Choose your desired "fake" date.