1. Most magi dress so that they are easily recognisable as members of the Order. This often includes badges and insignia, which are known to many learned people. Players whose character dresses differently, should be careful to state this.
2. The Irish year starts on 1 November (toussaints or Halloween), and the year is divided in two, with Summer starting 1 May. Matching this with Hermetic seasons, it is reasonable to let the year start with Winter 1 November, Spring 1 Februar, Summer 1 May, and Autumn 1 August. This places solstices and equinoxes approximately mid-season. The difficulty is, of course, that the Winter of 1220, starts 1 November 1219 by modern calendar.
3. The common calendar year starts with Spring from the Spring Equinox. Winter is the last season of the year, from Winter solstice to Spring Equinox.

Mercere Portals

A common question is how easily the redcaps travel. In particular, where do they have Mercere Portals? Some are mentioned in canon, but they are scattered across many books, and it is hard to find them all. There has been one effort to map all the Mercere Portals.

Personally, I prefer the map of canon portals.
This means that redcaps in many tribunals have to use mundane means to travel to the next tribunal. For instance, in Hibernia, redcaps from Leth Moga could go by ship to Bretagne and use the portal via Durenmar to Harco. Redcaps from Leth Cuinn could go to Coventry to relay messages or use the portal to Harco.

I would possibly add Mercere Portals from Harco to Iberia and Thebes, which are disconnected and riddled with great distances in the strictly canon map. They are stable covenants, making it relatively safe to set up links.

The more speculative map means that travel and messaging is much more efficient, somewhat breaking the medieval feel. The redcap travelling vast distances by mundane means becomes a lot less common.