Corrects the previous conclusion (that this id had no clean sourceable
date at all). The reference engine has a dedicated proper for this
Sunday, Tempora/Nat1-0, distinct from the individual octave-day saints'
own pages -- most years the Sunday loses outright to a Duplex-II-classis
octave saint (St. Stephen/St. John/Holy Innocents) and only earns a bare
commemoration, which is what the earlier search kept finding, but
2029-12-30 is a year where the Sunday wins outright with no
commemoration at all, so that's the date pulled from.
All 52 temporal ids (54 counting marian-saturday/christ-the-king) now
have an authored Benedictus antiphon, closing out the temporal half of
the "every sanctoral and temporal entry needs its antiphons" task for
real.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
