How to create a scheduler for updating a boolean value using Rules? I am displaying a boolean value as 'New' along with published content title.

Now I need like, the 'New' tag should be displayed for a period (ex: 3 months). After this period I need that content as it is, but 'New' tag should be removed.
It's defined in node.module like follows

define('NODE_NEW_LIMIT', REQUEST_TIME - 30 * 24 * 60 * 60);


AFAIK, you can't redefine this value. I think you need to change and use your value in all the places.

I'll check and If I found better option I'll update my answer :)