diff --git a/CLAUDE.md b/CLAUDE.md
index ccc509d..d852143 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -118,8 +118,7 @@ sort: 100           # controls nav ordering (lower = higher)
 section-id: blog    # assigns page to a nav section
 draft: true         # exclude from nav and search
 author: Name
-date: 2025-01-01
-datetime: 2025-01-01 13:00   # use this for posts (not `date` alone — see known limitations)
+created: 2025-01-01 13:00
 modified: 2025-01-15 09:00
 keywords: foo, bar
 description: Short description for search
@@ -155,7 +154,7 @@ paginate: yes
 ```
 ````
 
-Reliable tags (others are known-broken): `posts-datetime-chronological-byyearmonth`, `posts-datetime-reversechronological`. Use `datetime` frontmatter (format: `YYYY-MM-DD HH:MM`) for posts — `date` alone does not work reliably.
+Reliable tags (others are known-broken): `posts-datetime-chronological-byyearmonth`, `posts-datetime-reversechronological`. Use `created` frontmatter (format: `YYYY-MM-DD HH:MM`) for posts.
 
 ## Release workflow
 
diff --git a/mdcms.py b/mdcms.py
index 0a72de2..2a1a6e8 100644
--- a/mdcms.py
+++ b/mdcms.py
@@ -173,8 +173,6 @@ def scan_and_categorize(directory: Path, site_root: Path, known_codes: set) -> l
                 "sort": meta.get("sort"),
                 "section-id": meta.get("section-id"),
                 "author": meta.get("author"),
-                "date": str(meta.get("date", "")),
-                "datetime": str(meta.get("datetime", "")),
                 "created": str(meta.get("created", "")),
                 "modified": str(meta.get("modified", "")),
                 "language": meta.get("language", "en"),
@@ -326,8 +324,8 @@ def generate_search_json(
             "keywords": r.get("keywords", ""),
             "description": r.get("description", ""),
             "author": r.get("author"),
-            "date": r.get("date", ""),
-            "datetime": r.get("datetime", ""),
+            "created": r.get("created", ""),
+            "modified": r.get("modified", ""),
             "language": r.get("language", "en"),
             "body": r.get("body", ""),
         }