IKrismesi ibingasoloko inguDisemba wama-25. Ngelixa iKrismesi isibhiyozela ukuzalwa kukaYesu Kristu, akukho kushiwo ngoDisemba wama-25 eBhayibhileni. Uninzi lweembali zithi uYesu wazalwa entwasahlobo. Kwaye usuku lokuzalwa kwakhe alubangazanga luyiholide olusemthethweni de kwaba yinkulungwane yesithathu. Ezinye iimbali ziyakholelwa ukuba umhla ukhethwe kuba wawuhambelana nomthendeleko wamaqaba iSaturnalia, owawubeka uthixo wezolimo uSaturn ngokubhiyozela nokunikela izipho.