Minimal Hindu panchang, after drikpanchang.com. Live at tithi.agenticrabbit.com.
- Landing page: today's moon, tithi and nakshatra, with "Go to daily panchang" and "Sign in with Google".
- Today: summary line, what's coming up, five limbs (tithi, nakshatra, yoga, karana, vara), sun and moon times, good and bad hours, choghadiya, hora, moon phase, place in the year.
- Calendar: month grid with tithi and festivals; tap a day to preview it.
- Festivals: the year's observances, dated by the time of day each is kept (see "How this is worked out" at the foot of the page).
- Any city (built-in list plus Open-Meteo search) or your location. Links like
#calendar?date=2026-10-01&city=Mumbaiare shareable. - Toggles at the foot of the page: theme (auto, light, dark), Hindi names, amanta or purnimanta months. They're stored in
localStorage. - For you (signed in): from your birth date, time and place, how the day stands for you (tara bala, chandra bala, chandrashtama), your best windows, and your Vimshottari dasha, Sade Sati phase and Jupiter's house. Calendar days are tinted for chandrashtama and weak tara. Birth details are stored per Google account and can be deleted from the page.
- Works offline and installs to the home screen.
- Static festival pages for search: /festivals/ lists every festival's date across the built-in cities, for this year and next.
Everything is calculated in the browser with astronomy-engine (loaded from jsDelivr). Sidereal positions use Lahiri (with precession and nutation). The only server code is worker.js, which stores birth details.
Static files, no build.
python3 -m http.server # open http://localhost:8000 (no /api)
npx wrangler dev --port 8779 # site plus /api with local KV; wrangler needs Node 22+
npm i --no-save astronomy-engine && node test.js # prints "ok"
test.js checks festival dates against Drik Panchang for New Delhi (2025–2027) and London (2026), and the For you rules (natal nakshatra, tara and chandra bala, dasha, Sade Sati) against Drik's pages.
node pages.js # rewrites festival/, festivals/ and sitemap.xml; commit the output
Re-run pages.js after changing a festival rule. YEARS is this year and next; a GitHub Action (.github/workflows/pages.yml) regenerates and pushes the pages each 1 January, and can be run by hand from the Actions tab.
Pushing to main deploys to tithi.agenticrabbit.com (a Cloudflare Worker serving static assets, built by Workers Builds from wrangler.jsonc). Only the files listed in .assetsignore are served. worker.js handles /api/* (run_worker_first): GET/PUT/DELETE /api/birth, authenticated by the Google ID token and stored in the BIRTH KV namespace (tithi-birth). The Google OAuth client ID is in index.html and worker.js; its JSON with the secret is kept locally as google-oauth-client.json, gitignored and never committed.