The coffin will rest in the throne room of the Palace of Holyroodhouse, before being transferred on Monday to Saint Giles Cathedral, where a service will be held in the presence of King Charles III.
The queen's body currently rests in an oak coffin draped with the royal banner of Scotland and with a wreath placed on top in the ballroom of Balmoral Castle.
William, 40, who is now heir to the throne, said the queen "was by my side in my happiest moments. And she was by my side in the saddest days of my life."
Following a carefully crafted protocol long overdue, the late queen's 73-year-old son slowly settles into the head of state and into the hearts of the British people.
They recommended that the sovereign remain under medical surveillance. He has been suffering from what Buckingham Palace has called "episodic mobility problems" since late last year.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
