US and Japan sign treaty for Japan's sovereignty in Washington, DC

The transcript discusses the termination of Japan's occupation and the cessation of the Supreme Commander for the Allied Powers' functions, coinciding with the implementation of a treaty.

How does the text describe the transition of power in Japan?

What event is described to occur at the same hour as the termination of the occupation of Japan?

What will happen to the office and functions of the Supreme Commander for the Allied Powers?

What will cease to exist simultaneously with the coming into effect of the Treaty?

What is the significance of the Treaty mentioned in the text?