You just need to have whatever script is doing the reset to make a file, of whatever type you can use, that notes the time the reset occurred, and to say when the next one will occur. Then when a visitor comes to the site, the index page will reference that file so your visitors will know.
Welcome to http://www.myphotowizard.net
where you can edit images, make a photo calendar, add text to images, and do much more.
When you know what you're doing it's called Engineering, when you don't know, it's called Research and Development. And you can always charge more for Research and Development.