1 files changed, 24 insertions, 0 deletions
diff --git a/internal/caldata/tridentine-calendar.ini b/internal/caldata/tridentine-calendar.ini
index e8f0797..2786125 100644
--- a/internal/caldata/tridentine-calendar.ini
+++ b/internal/caldata/tridentine-calendar.ini
@@ -7,6 +7,30 @@
 ; data). name.en is always regenerated fresh from missalemeum; every other
 ; name.<lang> (missalemeum supplies English only) is preserved verbatim from
 ; whatever this file already carried before regeneration. See NOTICE.
+;
+; NO LONGER PURELY GENERATED -- READ BEFORE RE-RUNNING THE GENERATOR.
+; Four fields below are HAND CORRECTIONS against the 1962 Missale Romanum
+; itself, adopted 2026-08-18 from the sibling project colitur, which validated
+; this data against the Missal and found missalemeum wrong on each. They are
+; NOT in missalemeum and a regeneration WILL SILENTLY REVERT THEM. Re-apply
+; them, or teach the generator to, before committing regenerated output:
+;
+;   [ubaldus]                  rank   commemoration -> class-3
+;   [didacus]                  rank   commemoration -> class-3
+;   [vigil-of-st-lawrence]     colour red           -> violet
+;   [vigil-of-the-assumption]  colour white         -> violet
+;
+; Authorities. The Missal's own universal calendarium ranks both saints "III
+; classis" outright, with no commemoration rubric, and each has its own Mass
+; entry in the Proprium taking its readings from a Common -- which a bare
+; commemoration never has. RG 128 gives violet to "vigils of II and III class
+; outside Paschaltide"; its sole exception is the Ascension's vigil, inside
+; Paschaltide, which is white and is correctly untouched here.
+;
+; Six days of internal/calendar's own 730-day missalemeum oracle window are
+; allow-listed as a result -- see oracle_ef_test.go, where the entries carry
+; these same citations. The oracle is not wrong to flag them; missalemeum is
+; simply the party that disagrees with the Missal now.
 
 [layer]
 id   = tridentine