AI Timeline is a conference deadline browser for AI and adjacent CS venues. It pulls upstream conference calendars into one interactive timeline so you can compare submission windows, rebuttal periods, notifications, camera-ready milestones, and conference dates without jumping across multiple CFP pages.

Live site: https://www.ai-timeline.net/

Stack: Next.js 16, React 19, TypeScript 5, Tailwind CSS 4, and Vitest.

• One continuous timeline surface with drag-to-pan for dense deadline seasons
• Search with Cmd/Ctrl+K
• Filters for category, milestone type, and visible range (3M, 6M, 12M, All)
• Automatic Active / Past grouping based on the viewer's current time
• Timezone-aware milestone tooltips that show both the source date context and the viewer-local time
• Ranking badges for CCF, CORE, and THCPL when available
• Expandable inline venue details with location, CFP links, and notes for partial schedules
• Responsive layout plus light/dark theme switching

The home page renders on the server in app/page.tsx and loads conference data through src/lib/data/get-conferences.ts.

The runtime data path is:

1. Try a live fetch + merge from:
   • ccfddl/ccf-deadlines
   • huggingface/ai-deadlines
2. Fall back to the committed cache snapshot in src/lib/data/cache.json
3. Fall back again to the curated seed dataset in src/data/conferences.ts

When both upstream sources contain the same venue/year, the merge keeps the structured category and ranking metadata from CCFDDL and the richer milestone chain from HF AI Deadlines.

Additional details:

• app/page.tsx exports revalidate = 86400, so Next.js refreshes the page on a 24-hour cadence.
• Milestones support AoE, UTC, named IANA timezones, and local conference dates.
• The static dataset remains in the repo as the final fallback, not the primary production source.

• app/page.tsx: server entry point that requests conference data and renders the timeline browser
• src/components/timeline: interactive UI for controls, grid rendering, tooltips, and expandable detail rows
• src/lib/data: upstream fetchers, source merging, ranking parsing, category inference, and fallback loading
• src/lib/timeline: range math, timezone handling, filtering, positioning, and sectioning
• src/data/conferences.ts: curated seed data used only when live data and cache are both unavailable

Node 22 is recommended to match the GitHub Actions environment.

Install dependencies:

npm ci

Run the app locally:

npm run dev

Then open http://localhost:3000.

Run verification checks:

npm run test -- --run
npm run lint
npm run build

GitHub Actions runs the following on pushes to main and pull requests that target main:

• tests
• lint
• production build