Staying Up Late to Study, "burning the __ Oil"

This page is the CodyCross answer for the clue below from Science Lab, Group 312, Puzzle 5 (Hypothesis).

Question is: Staying Up Late to Study, "burning the __ Oil"

and the answer is: MIDNIGHT

Word Meaning:

MIDNIGHT — The middle of the night: the sixth temporal hour, equidistant between sunset and sunrise.

Definitions from Wiktionary.

Staying up late to study, "burning the __ oil" — CodyCross Answer | CodyCross Solutions