Today is Remembrance Day/Veterans Day/Armistice Day, called varying things in different countries. In some places it is an official holiday. But 11th of November has an older meaning that pre-dates the end of the First World War.

The 11th of November is Martinmas, the Feast Day of St Martin of Tours.

I am informed that some of the Eastern Orthodox churches celebrate this feast day on the 12th rather than the 11th. But in the Roman Catholic, Anglican, and Lutheran traditions he is celebrated on the 11th, as the anniversary of his burial in 397 AD

St Martin is close to my heart for a few reasons. Principal of which is that my church @smitf_london , where I am a member, employee (til 1 Jan), and council member for (post 1 Jan).

St Martin has no real connection to London, but many churches around the world have been named for him. Heck, our church isn't even the only St Martin in London.