Visit Date&time mapping Visit Date

Visit Date&time mapping Visit Date

hi all,

I want to mapping  Visit Date&time with  Visit Date in Lead Module.
I mean, In lead module, I have Visit Date&Time and Visit Date (I have just added).
I need Just Visit Date not needing to Time.How can I transfer to Visit Date&Time's Visit Date to Visit Date.
If I need any code could you share with me.