Hi Anusha,
RelativeDate is a formula available in Web Intelligence. It takes date and number of days as parameteres. When we pass any date object and 2/24, it adds 2 hours to the date object. So you need to create a variable in web intelligence and use this formula.
You should be able to find more information on this in web intelligence formula reference.
PS: The same can also be achieved at the universe level too {better as you don't need to create the formula everytime you use this object}.
Kind Regards
Mohan