"It is noon."

Translation: È mezzogiorno.

[Elena18]

Ok, now I am really confused. A few questions ago we were asked to translate "THE noon" into Italian. Since there is NO SUCH THING as "THE" noon in English, I took it to mean that Duo was trying to teach us that we have to use "IL" with mezzogiorno. Now I see that we don't..?

[Radamian]

and in another sentence they say you do