# A real vigil. Sep 20 sometimes coincides with the movable September
# Ember Saturday (privileged-feria, already modeled -- which specific
# week in September Ember falls in shifts year to year, confirmed by
# comparing 2025, where Sep 20 IS Ember Saturday, against 2026, where
# Sep 20 is an ordinary Sunday instead). In the *real* engine, on an
# Ember-Saturday year this vigil is commemorated Mass-only rather than
# fully displaced (2025-09-20, live check) -- this app doesn't model that
# Office-vs-Mass distinction anywhere, so here it simply transfers per the
# ordinary privileged-feria/vigil rule instead, a known, already-accepted
# simplification (not specific to this saint) rather than a guess. No
# unique collect: the raw file at this MM-DD slot (Sancti/09-20.txt) is
# empty.
id: vigil-of-st-matthew
name: "Vigil of St. Matthew"
rank: vigil
common: common-of-a-vigil
propers: null