From Longman Dictionary of Contemporary Englishnoondaynoon‧day /ˈnuːndeɪ/ adjective [only before noun] literary TMChappening or appearing at noon SYN midday It was impossible to work in the heat of the noonday sun.
Examples from the Corpus
noonday• This is one of the afflictions meted out by Meridiana, the noonday demoness.• The noonday sun beat down fiercely; dusty air carried the stink of rotting garlic after a prolonged dry spell.• the noonday sunnoonday sun• Ice-blue blinds were lowered to keep out the noonday sun.• The noonday sun beat down fiercely; dusty air carried the stink of rotting garlic after a prolonged dry spell. 