When is St. Margaret's Day (in November)?

St Margarets day is Sunday Nov 11 at 10am

That's a good question. From Wikipedia... Pope Innocent IV canonized St. Margaret in 1250 in recognition of her personal holiness, fidelity to the Roman Catholic Church, work for ecclesiastical reform, and charity. On 19 June 1250, after her canonisation, her remains were transferred to a chapel in the eastern apse of Dunfermline Abbey in Fife, Scotland.[10] In 1693 Pope Innocent XII moved her feast day to 10 June in recognition of the birthdate of the son of James VII of Scotland and II of England.[11] In the revisionof the General Roman Calendar in 1969, 16 November became free and the Church transferred her feast day to 16 November, the date of her death, on which it always had been observed in Scotland.[12] However, some traditionalist Catholics continue to celebrate her feast day on 10 June.