[John McCall (lowlydba)]

Pull Request

The release calendar JSON is documented only at its docs.overturemaps.org URL. This adds the jsDelivr mirror of the same file to the release calendar page (schedule intro and "Release data as JSON" section) and the README, so consumers have a documented alternative.

The mirror URL returns 200 with Content-Type: application/json. The docs site was not built locally and no markdown lint was run.

Fixes #607

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Max errors	Warnings	Elapsed time
✅ JAVASCRIPT	eslint	32		0		0	20.59s
✅ MARKDOWN	markdownlint	286		0		0	0.57s
✅ SQL	sqlfluff	79		0		0	5.97s

See detailed reports in MegaLinter artifacts

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@10.1.0 --custom-flavor-setup --custom-flavor-linters JAVASCRIPT_ES,MARKDOWN_MARKDOWNLINT,SQL_SQLFLUFF

Show us your support by starring ⭐ the repository

[github-actions]

🗺️ Overture Docs preview is live!

🌍 Preview site	https://staging.overturemaps.org/docs/pr/608/index.html
🕐 Updated	Nov 09, 2026 15:12 UTC
📝 Commit	ecb2dc2

Note

♻️ This preview updates automatically with each push to this PR.

[Copilot]

🟡 Changes recommended

The release calendar docs and README omit the required caveats about jsDelivr’s 12-hour branch-cache lag and using a tag or commit SHA to pin a version.

1 open issue

• Document jsDelivr cache lag and version pinning · New

What changed in this PR

This documentation-only PR adds a jsDelivr alternative for fetching release-calendar JSON, addressing the fallback-discovery goal of #607.

Changes:

• Documents the mirror in the release calendar page’s schedule introduction and JSON section.
• Adds the same mirror URL to the README’s Release Calendar section.

File	Description
README.md	Adds the jsDelivr endpoint alongside the primary JSON URL.
docs/​release-calendar.mdx	Links the mirror as an alternative for calendar consumers.

_{Review effort: Balanced}

[Alex Iannicelli (atiannicelli)]

A Plan B URL for the release calendar — small change, big reliability win.