Council For The Indian School Certificate Examination has Officially declared the Time Table of 2016 ICSE and ISC Examinations and you can download them from the below links.
Download ICSE 2016 Time Table: ICSE 2016 Examination Time Table
Download ISC 2016 Time Table: ISC 2016 Examination Time Table
It is high time now that you start planning your studies. All the Best for your Exams !