Seasonal calendars like Advent shape Christmas decorating by anchoring specific decoration milestones and rituals. Advent begins four Sundays before Christmas with candles lit weekly, creating ritualistic anticipation. This calendar guides when to introduce or reveal decorations, often culminating with the Christmas tree on Christmas Eve. Such timing honors cultural heritage and infuses the season with purposeful pacing and light. Aligning decor with these calendars enriches meaning and mood, making holiday decorations feel more connected and ceremonious.