Ajax Calendar Extender Issue

Hi team,

Here I am Using ASP.Net Application.

In My application I used Calendar Extender and Here My issue is when ever I uploaded my application into Go-daddy domain My calendar extender today's date changing after afternoon 1 clock  and also my application is working in my local system is perfectly.

Here I am Validating Date  like"Future Date Will Not be accepted" and I want to set and show date in Text-box like Indian time.

I didn't understanding above issue .Please Help me  ASAP.

Thanks in Advance