Work Very Late, Burn the __ Oil
This page is the CodyCross answer for the clue below from The Netherlands, Group 2117, Puzzle 1 (Renewable Energy).
Question is: Work Very Late, Burn 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.