National Christmas Lights Day Image by Adonyi Gábor, via Pexels National Christmas Lights Day celebrates the beginning of December with the decorating of houses all across America with Christmas lights in preparation for the holiday season. National Christmas Lights Day + Add to Google Calendar + iCal / Outlook export Date Dec 01 2025 Time All Day Local Time Timezone: America/New_York Date: Dec 01 2025 Time: All Day Category Holiday Share this event