It turns out that one can find evidence of
two musical groups that name themselves
Calenda /or / Kalenda Maya:

one from Norway, and the other
from Chile.

They both favor repertoire from the medieval era,
with facsimile instruments and period dress,
and both have published recordings of their music.

so ...
we could have a Mudcat Kalenda Maya Tavern in the northern hemisphere
and a Mudcat Calenda Maya Tavern in the southern hemisphere,
with a different musical headliner at each.