Today, a common screen inside most of iphone applications it`s a calendar screen, We can add, select, delete entries inside the standard iphone calendar, but sometimes we must code our customized calendar, and then we can control everything inside it, so, I`m posting the source code of this calendar bellow, which I did a few days ago:
It`s a separate project which you can get the classes and fell free to put in your project.

Here it`s the  calendar!

If you want some sort of explanation of the code just go on this link .

-Arthur N.