# Kalendarz Pracy

> Working time in Poland, computed from the statutes: public holidays, monthly working-time norms (wymiar czasu pracy, art. 130 Kodeksu pracy), trading Sundays (niedziele handlowe) and long weekends with a leave planner. State of law: 2026-10-02. Results are informational, not legal advice.

Language of the site: Polish. Dates: ISO 8601. Weekdays: ISO (1 = Monday). Durations are exact, never rounded.

## MCP server (for agents)

- [MCP endpoint](https://kalendarzpracy.pl/mcp): Streamable HTTP, stateless, JSON responses, no authentication. Tools: get_working_time, get_working_time_range, get_public_holidays, count_working_days, add_working_days, check_trading_sunday, get_trading_sundays, get_long_weekends, plan_leave.

## JSON API (static, CORS enabled, no key)

- [API index](https://kalendarzpracy.pl/api/v1/index.json): all datasets and years (2025, 2026, 2027, 2028)
- [OpenAPI description](https://kalendarzpracy.pl/api/v1/openapi.json)
- [Working time 2026](https://kalendarzpracy.pl/api/v1/working-time/2026.json): working days and norm per month
- [Public holidays 2026](https://kalendarzpracy.pl/api/v1/holidays/2026.json)
- [Trading Sundays 2026](https://kalendarzpracy.pl/api/v1/trading-sundays/2026.json)
- [Long weekends 2027](https://kalendarzpracy.pl/api/v1/long-weekends/2027.json)

## Calendars (ICS)

- [Trading Sundays, all years (subscribable)](https://kalendarzpracy.pl/ics/niedziele-handlowe.ics)
- [Public holidays 2025](https://kalendarzpracy.pl/ics/swieta-2025.ics)
- [Public holidays 2026](https://kalendarzpracy.pl/ics/swieta-2026.ics)
- [Public holidays 2027](https://kalendarzpracy.pl/ics/swieta-2027.ics)
- [Public holidays 2028](https://kalendarzpracy.pl/ics/swieta-2028.ics)

## Pages

- [Wymiar czasu pracy 2026](https://kalendarzpracy.pl/wymiar-czasu-pracy/2026/): year table; month pages at /wymiar-czasu-pracy/{year}/{month}/ with Polish month slugs (styczen, luty, marzec, kwiecien, maj, czerwiec, lipiec, sierpien, wrzesien, pazdziernik, listopad, grudzien)
- [Długie weekendy](https://kalendarzpracy.pl/dlugie-weekendy/2027/) and [planer urlopu](https://kalendarzpracy.pl/dlugie-weekendy/planer-urlopu/)
- [Niedziele handlowe 2026](https://kalendarzpracy.pl/niedziele-handlowe/2026/) and [czy dziś niedziela handlowa](https://kalendarzpracy.pl/czy-dzis-niedziela-handlowa/)
- [Jak liczymy](https://kalendarzpracy.pl/jak-liczymy/): formulas and legal basis with links to ISAP