title: XCode availability of button according to current date
body: <p>I'm wondering is it possible to make one button available in a particular day of the month. The app is something like a calendar and each day is one button. when it is 12 november can I program it user be able to click on day 1 to 12... on 13th of november when he click the button an alert message will appear.</p>
  
  <p>Thanx in advance</p>