Hi Ankita,
I assume that you're asking because you're concerned that your Official GMAT Score Report will not be available by the application deadline that you listed. Many Business School's are actually flexible about when the Official Report becomes available AS LONG AS you get the actual application in on time. As such, you probably don't have anything to worry about. For informational purposes, the amount of time that it takes for the Official Report to be generated will vary (usually 1 to 2 weeks), but as I mentioned, this is something that will probably not effect how your application is viewed. It usually takes Business School Admissions Officers MONTHS to read through and evaluate all of the applications. To confirm that it's okay that your Official Score Report might come in a little late, you should contact the School(s) directly and ask. I suspect that it will be.
GMAT assassins aren't born, they're made,
Rich