--- title: "Name Day Calculator" site: ProCalc.ai section: Culture url: https://procalc.ai/culture/name-day-calculator markdown_url: https://procalc.ai/culture/name-day-calculator.md date_published: 2026-04-08 date_modified: 2026-04-13 date_created: 2026-03-15 input_mode: focused --- # Name Day Calculator **Site:** [ProCalc.ai](https://procalc.ai) — Free Professional Calculators **Section:** Culture **Calculator URL:** https://procalc.ai/culture/name-day-calculator **Markdown URL:** https://procalc.ai/culture/name-day-calculator.md **Published:** 2026-04-08 **Last Updated:** 2026-04-13 **Description:** Free Name Day Calculator — find your name day across 8 countries including Greece, Poland, Italy, and Sweden. Includes meaning, origin, and saint info. > *This file is served for AI systems and search crawlers. Human page: https://procalc.ai/culture/name-day-calculator* ## Overview Name days are a real part of the calendar in many places, tied to saints’ days, local traditions, and the way families celebrate. With ProCalc.ai’s Name Day Calculator, you can quickly check when a name is honored across the USA, Greece, Poland, Italy, Spain, Germany, Sweden, and France, along with the name’s meaning and the customs that go with it. It’s especially useful if you’re planning a cross-cultural celebration, like an expat family keeping Greek name day traditions while living in the U.S., or a wedding planner trying to avoid scheduling an Italian reception on the bride’s name day.… ## Formula ## How the Name Day Lookup Works This calculator queries a database of 8,638 name day entries across 8 country calendars. When you type a name, the system follows a three-step resolution process. **Step 1 — Exact match.** Your name is normalized (diacritics removed, lowercased) and matched against the calendar database. If "Mary" exists in the US calendar for August 15, that result returns instantly. **Step 2 — Fuzzy matching.** If no exact match is found, PostgreSQL trigram similarity (pg_trgm) scores your input against all known names. A score above 0.5 triggers an automatic redirect — "Jonn" becomes "Jon." Lower scores offer a suggestion without redirecting. **Step 3 — Cross-language resolution.** The system checks the name profile for related variants. "John" connects to Jean (France), Giovanni (Italy), Juan (Spain), Jan (Poland), and Hans (Germany). Each variant is queried separately, and results are merged with a "via" label showing the connection. All lookups are deterministic — no AI is involved in the date calculation. The calendar data comes from nameday.abalin.net (MIT License), cross-referenced with Behind the Name for variant forms. ## How to Use ## What Is a Name Day? A **name day** is a tradition celebrated across Europe, Latin America, and many other cultures. Each day of the year is associated with one or more given names, typically tied to Catholic or Orthodox **saint feast days**. In many countries — especially Greece, Poland, Hungary, Sweden, and France — name days are celebrated as enthusiastically as birthdays. ## How This Calculator Works Type any name and instantly see its celebration dates across **8 countries** (USA, Greece, Poland, Italy, Spain, Germany, Sweden, France). Our AI generates a rich profile for every name — meaning, origin, saint associations, famous bearers, and related name variants across languages. ## Cross-Language Name Matching Names evolve across borders. **John** becomes **Jean** in France, **Giovanni** in Italy, **Juan** in Spain, and **Ivan** in Russia. Our calculator automatically finds these connections through AI-generated related names, showing you name days for all variants in every country. ## Fuzzy Matching Misspelled a name? We will find the closest match. Type "jonn" and we will show you results for **Jon**. For unusual names, we generate a complete profile using AI — meaning, origin, and cultural context for any name on earth. ## Name Days Around the World Name day traditions vary significantly by country. In **Greece**, name days (onomastiki eorti) are often celebrated more than birthdays — friends visit without invitation. In **Poland**, imieniny involve hosting gatherings with cake and drinks. **Sweden** maintains one of the world's most carefully curated name day calendars, officially managed by the Swedish Academy. ## Related Tools - Curious about your [zodiac sign](/culture/zodiac-sign)? Find out what the stars say about your personality. - Explore the meaning of numbers in your life with our [numerology calculator](/culture/numerology). - Discover your [Chinese zodiac](/culture/chinese-zodiac) animal and element. - Find out what [moon phase](/culture/moon-phase-birthday-calculator) you were born under. - Calculate your [exact age](/math/age-calculator) in years, months, and days. - Check important [date differences](/math/age-calculator) between events. - Expecting a baby? Use our [due date calculator](/health/due-date-calculator) to plan ahead. - Learn about [time zones](/math/time-calculator) — name days follow local dates. ## Data Sources Our name day database covers 8,638 entries across 8 countries, sourced from [nameday.abalin.net](https://nameday.abalin.net) (MIT License) and supplemented by Behind the Name and UNESCO cultural heritage records. AI-generated name profiles are powered by Google Gemini and cached for instant access. ## Frequently Asked Questions ### What is a name day? A name day is a cultural tradition in many European and Latin American countries where each calendar day is associated with one or more given names, typically based on Catholic or Orthodox saint feast days. People celebrate their name day much like a birthday — with greetings, small gifts, or gatherings. ### How does this name day calculator work? Type your name and we search our database of real cultural name day calendars from 8 countries: USA, Greece, Poland, Italy, Spain, Germany, Sweden, and France. We show your name day in every country where it appears, including variant forms of your name in other languages (e.g., John shows results for Jean in France, Giovanni in Italy). ### Why does my name show different dates in different countries? Each country maintains its own name day calendar based on local traditions, saints, and cultural history. The same name (or its local variant) may be associated with different saints or feast days in different countries. For example, Maria's primary name day is August 15th in most countries (Assumption of Mary), but Poland celebrates it on many additional dates throughout the year. ### What if my name isn't found? Our database covers nearly 6,000 names across 8 countries. If your exact name isn't found, we use fuzzy matching to find the closest variant. Name days are most common for names with European Christian origins — names from other cultural traditions may not appear in these calendars. ### What does 'via [name]' mean in the results? When you see a result labeled 'as Jean' or 'as Giovanni', it means your name wasn't found directly in that country's calendar, but a related variant was. John, Jean, Giovanni, Juan, Jan, and Hans are all forms of the same name — we connect them so you see your name day across all cultures. ### How accurate is the Name Day Calculator? Results are as accurate as the underlying name-day calendars and sources used for each country or tradition. Some regions have multiple accepted calendars (religious vs. civil, old vs. revised), which can produce different dates for the same name. If a country has conflicting listings, the calculator may show the most commonly referenced date or provide alternatives when available. ### Name day vs birthday — what's the difference? A birthday marks the anniversary of a person’s birth date and is personal to the individual. A name day is tied to a calendar date associated with a given name, often based on saints’ days or traditional name lists. Many people celebrate both, but name days are shared by everyone with the same name in that calendar. ### Is the Name Day Calculator free? Yes, the Name Day Calculator is free to use for standard lookups. You can search names and view results without paying or creating an account. Some optional features or integrations, if offered, may have separate terms. ## Sources - [nameday.abalin.net (MIT License)](https://nameday.abalin.net/) - [Behind the Name](https://www.behindthename.com/) - [UNESCO Intangible Cultural Heritage](https://ich.unesco.org/) --- ## Reference - **Calculator page:** https://procalc.ai/culture/name-day-calculator - **This markdown file:** https://procalc.ai/culture/name-day-calculator.md ### AI & Developer Resources - **LLM index (short):** https://procalc.ai/llms.txt - **LLM index (full, with content):** https://procalc.ai/llms-full.txt - **MCP server:** https://procalc.ai/api/mcp - **Materials JSON API:** https://procalc.ai/api/materials.json - **Developer docs:** https://procalc.ai/developers - **Sitemap:** https://procalc.ai/sitemap.xml - **Robots:** https://procalc.ai/robots.txt ### How to Cite > ProCalc.ai. "Name Day Calculator." ProCalc.ai, 2026-04-08. https://procalc.ai/culture/name-day-calculator ### License Content © ProCalc.ai. Free to reference and cite. Do not republish in full without attribution.