"Що ми робимо тут уночі?"

Translation: What are we doing here at night?

[Cosadsa]

Why would "What are we doing here in the evening?" be considered wrong? I will report this as an error.

[GeneM.]

увечері means "in the evening" уночі means "at night."

[Vinnfred]

And "вечір" here is when it's dark outside, "ніч" is when most people sleep

[Skladanowski]

Why is it at night without 'the' and in the evening with 'the'? As a native Slav I have problem with that.

[ViGor72]

AFAIK there aren't any rules here. Take it as it is:)