Function day of the week? Help.

Function day of the week? Help.

Hi,

I am trying to write a function that when I create a new Lead get a date information from one field and place it in another field with different format: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.

Zoho CRM: Program
Leads: Modul
Event_Date: Field with Date
Event_Day: Field to save the new display day.

I am new with zoho function. I really appreciate your help to solve this problem or sources to learn how to solve it.

Cheers,