Positive.:bigsmile: It has an install date or you cannot install it at all, you cant download it and save it for a rainy day.
From the GOTD Website
Can I download the program today and install it after giveaway
period is over?
If I keep the build will it be
possible to use it to reinstall the program in the future?
The main idea of the project is to make registered version of particular
product available free of charge for 24 hours. We protect either Setup.exe or
Activate.exe against being used on any other date. So re-installation or
installation on other days is not possible.
My system crashed. How can I reinstall products gained earlier
All the GOTD builds can be used to install and activate the software on
giveaway date only. Thus to reinstall any product you will need to purchase it
from the Developer.