Definition of "twelfth day" []

• Twelve days after Christmas; celebrates the visit of the three wise men to the infant Jesus (noun)

WordNet. Princeton University. 2010.

• "On the twelfth day Major Nemu paraded them at half an hour's notice, allocated one corporal to look after them, and told them to walk to Port Dickson."
• "His death was officially announced on the twelfth day of the session by Bishop W.J. Gaines."
• "Transcript of message sent from Nalori Republic Senator Moyya to Commander Sonya Gomez on planet Sarindar, twelfth day of Sendrak, twenty-third year of Togh"