Old English 'sunnandaeg' — sun's day. Romance languages switched to 'Lord's day'; Germanic kept the sun.
The first day of the week in many cultures, following Saturday and preceding Monday.
From Old English 'sunnandæg,' meaning 'day of the sun,' a calque of Latin 'sōlis diēs' (day of the Sun). Like Monday, Sunday required no mythological substitution — the Germanic peoples translated the celestial body's name directly. The Roman designation honored Sol, the sun god, while the Germanic name