# vacanza/holidays

Open World Holidays Framework

Repository: https://github.com/vacanza/holidays
Canonical: https://ross.abutalabs.com/products/holidays
Homepage: https://pypi.org/project/holidays
Language: Python
License: MIT
License Family: permissive
Topics: python, holiday, calendar, holiday-api, holiday-calculation, hacktoberfest
Last push: 2026-08-26T03:33:55+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 4392, "days_push": 7, "days_rel": 16, "gap_med": 14.0, "n_releases_24m": 47}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1920, forks 711 (observed 2026-08-28T04:05:55.112151+00:00)

## What it is
A fast, efficient Python library for generating country- and subdivision-specific sets of government-designated holidays on the fly. It makes determining whether a specific date is a holiday fast and flexible across a worldwide catalog of regions.

## Use cases
- check if a date is a public holiday in a given country
- generate a list of holidays for a state or province
- calculate business days excluding holidays
- build vacation or payroll scheduling logic
- localize holiday names for an international app
- get holidays for a specific year on the fly

## When to choose
- you need holiday data for many countries and subdivisions in Python
- you want fast, on-demand holiday calculation without external API calls
- you need localized holiday names and regularly updated rules

## When to avoid
- you need non-government or religious observance data beyond official holidays
- you work outside Python or need a hosted holiday API service
- you need historical holiday data far beyond the library's coverage

## Facets
- artifact type: library
- maturity: active
- function: date-time, internationalization
- domain: developer-tools
- platform: python, cross-platform
- tags: holidays, calendar, worldwide, vacation-planning, localization

## Member repositories
- vacanza/holidays (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:55.112151+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:09:49.669835+00:00, confidence not recorded.
  - readme: https://github.com/vacanza/holidays (fetched 2026-08-28T04:05:55.112151+00:00, sha 778b7daa6bdb)
  - homepage: https://pypi.org/project/holidays (fetched 2026-08-29T10:49:12.072613+00:00, sha 4b4e8fead74a)
  - registry_pypi: https://pypi.org/pypi/holidays/json (fetched 2026-08-29T10:49:12.082643+00:00, sha 5eb1286af76a)
- Data as of 2026-08-30T08:39:29.467469+00:00.