How would I make a notice show up a certain day every week?

[kh99]

I threw together a simple mod, which I'm attaching - it only allows you to select one day of the week (so if you want to show a notice on more than one day you'd have to duplicate the notice, or else change the mod to allow it).

Thanks to Wired1, whose mod made it easier to figure out how to do this.

Edit: Updated this, now allows multiple days and choice of user's timezone or GMT.