Explanation – Prorogation is the termination of a session of Parliament by the President. It doesn’t require the House to be adjourned sine die. The President has the power to prorogue the House at any time, even while it is in session. Prorogation typically occurs after the House is adjourned sine die, but there is no constitutional restriction preventing the President from proroguing the House while it is still in session.

Source: AIR