Leaves that can availed during articleship

what is the official leave declared by the institute????

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The official leave as per Institute Regulations ia s one-seventh of the total period served under articles. Refer the following link at the Institute's website: https://www.icai.org.in/post.html?post_id=813

Thanks for providing the link but still not much is given in detail in the above link.

The amended regulation 59 & 74 proovides that an articled assistant can is allowed leave upto 1/6th of period served under articles.
 

Moiz W is right. its 1/6th of period served.