Instruction file imported from michaelgainford/michaelgainford.github.io (.github/instructions/sitemap-update.instructions.md). Copyright stays with the author.

Sitemap Date Update

Whenever a page file under app/ is created or modified, update the sitemap dates for that route.

Sitemap Files

There are two files to keep in sync:

1. public/sitemap.xml — update the <lastmod> value for the matching <loc>.
   • Format: YYYY-MM-DDTHH:MM:SS+00:00
   • Example: 2026-05-09T00:00:00+00:00
2. data/data_for__sitemap.json — update the lastUpdated value for the matching entry.
   • Format: YYYY-MM-DD
   • Example: 2026-05-09

How to Match Routes

Map the changed file path to the live URL:

Use the same pattern for any nested route.

Steps

1. Identify the route(s) affected by the file change.
2. Update <lastmod> in public/sitemap.xml for each affected <loc>.
3. Update lastUpdated in data/data_for__sitemap.json for each matching entry.
4. Use today's date for both values.

Notes

• If a new page is added and has no sitemap entry yet, add one to both files.
• If the changed file affects a parent route (e.g. shared layout or data), update the parent route entry too.
• Do not update entries for routes you did not change.