The adjectives in the sentence are: DARK and LUNAR
An adjective is a word that modifies a noun. In the given sentence, the adjective 'dark' modifies the noun 'moon', while the adjective 'lunar' modifies the noun, 'eclipse'. However, the word 'dark' is not always an adjective in all sentences, it may sometimes be used as an adverb if the word it modifies is an adjective.