Privacy policy

Summary

fatcalendar has no accounts, no advertising and no tracking cookies. We collect the minimum needed to calculate a calendar for you.

What we process

• Location. Sunrise, tithi end times and prayer times depend on where you are. We use the place you search for, the coordinates your browser shares if you allow geolocation, or the approximate location (city level) that Cloudflare derives from your IP address if you share nothing. Coordinates are rounded to 0.1 degree (about 11 km) before calculation. They are used only to compute the response and are not stored against any identity.
• Preferences. Your chosen tradition, language, view and place are saved in your browser's localStorage so the site opens the way you left it. They never leave your device and are not cookies.
• Technical logs. Our host (Cloudflare) processes request metadata such as IP address, user agent and URL to deliver the service, prevent abuse and enforce rate limits. We do not build profiles from it.
• API and MCP calls. The query parameters you send (tradition, language, date, place or coordinates) are used to compute the answer. In-memory counters keyed by client IP implement the rate limit and are discarded.

What we do not do

• No sign-up, passwords or email collection.
• No third-party analytics, advertising or tracking scripts.
• No selling or sharing of personal data.
• No cookies other than any strictly necessary ones set by our CDN for security.

Third parties

Calculation requests are made by our server to the jotish.ai ephemeris API using rounded coordinates and dates only - never your IP address, user agent or any identifier. Hosting and delivery are provided by Cloudflare.

Your choices

Decline browser geolocation and type a place instead; clear localStorage to remove saved preferences; contact us at hello@fatcalendar.com with any privacy request.

Changes

We will update this page if practices change. Last reviewed: November 2026.