Why is Saint.Luke's feast day October 18?

Saint Luke's feast day is celebrated on October 18 to honor his contributions as one of the four Gospel writers in the New Testament. He is recognized for his emphasis on the compassion of Christ and his detailed account of Jesus' life and teachings. The date is significant in the Christian liturgical calendar, and it reflects the tradition of commemorating saints on the anniversary of their death or a significant event in their lives. Luke is also the patron saint of physicians and artists, highlighting his diverse influence.