'On the Third Day' in the Bible

Turn again, and tell Hezekiah the captain of my people, Thus saith the LORD, the God of David thy father, I have heard thy prayer, I have seen thy tears: behold, I will heal thee: on the third day thou shalt go up unto the house of the LORD.

And Hezekiah saith unto Isaiah, 'What is the sign that Jehovah doth give healing to me, that I have gone up on the third day to the house of Jehovah?'