• 曜日ようび — day of the week
• 月曜日げつようび — Monday
• 火曜日かようび — Tuesday
• 金曜日きんようび — Friday
• 照曜しょうよう — shining sun (literary)

曜 is a phono-semantic compound made from 日 (sun) and a phonetic component 耀 (shine). It originally expressed the idea of shining light. Over time, it came to represent the days of the week, each associated with celestial elements like the sun, moon, and planets.