In , Bangalore Diwali vacation is declared on the 24th of October 2014. Diwali will be celebrated in Karnataka on the 24th. Most of the Offices in Bangalore have declared holiday on 24th.
But the actual festival date varies according to region to which an individual belongs to.
For example,Employees from Tamil Nadu would be celebrating the festival on the 22nd of October
North Indians will be celebrating on the 23rd of October 2014. See the company holiday list http://www.joblagao.com/company-holidays.aspx