The Glorious 12th. He never makes it any more, but on this date, Good King Billy used to ride about Saint John his white charger on the streets of the south end. (The Irish ghetto).
Despite the bolderized version of the Orange Order in the wiki link above, not all irishmen were unquestioned supporters. The Order's people were more English than Irish and were celebrating the victory of a Dutch King over the indigineous forces at the Battle of the Boyne.
I recall, as a child being tickled to see some lad prancing about on a big white horse. It was rather forwned upon as we were Catholic and one of the pledges Orangemen makes is:
"... he should strenuously oppose the fatal errors and doctrines of the
Church of Rome, and scrupulously avoid countenancing (by his presence or
otherwise) any act or ceremony of Popish worship; he should, by all lawful
means, resist the ascendancy of that Church, its encroachments, and the
extension of its power, ever abstaining from all uncharitable words, actions, or
sentiments, towards his Roman Catholic brethren; he should remember to keep holy
the Sabbath day, and attend the public worship of God, and diligently train up
his offspring, and all under his control, in the fear of God, and in the
Protestant faith...."
Quite a good friend of mine, an Irish Catholic (even if not what you might call devote) used to get rather excited on the 12th. I, a scots Catholic, thought it a rather interesting historical anachonism. and not threatening.