If a day is celebrated, it belongs in the record.
Holiday Calendar is the central, definitive source for celebrated observances. We turn scattered cultural traditions into a verified, permanent registry. This page is the standard every entry is held to.
Six commitments, fixed for every entry
Whether a day was signed into federal law or born in a group chat, it is researched, written, and maintained the same way.
Unbiased
We record factual history. We do not judge a holiday’s validity or importance, endorse products, or propose policies. We collaborate with organizations, brands, and individuals to document their initiatives, but the standard never bends: every entry meets the same primary source requirements.
Accurate
The registry is a living archive. Records and data visualizations update as soon as new primary evidence or government proclamations are released, and human errors are corrected the moment they are found.
Understandable
Legislative gazettes, historical archives, and social media trends are standardized into one clinical, easy-to-grasp format. We strip away promotional fluff and lead with the Core Registry Name, the formal institutional title, over common aliases.
Comprehensive
From international UN mandates down to niche community traditions, we do not filter for size or status. If an observance exists in the public consciousness, we research it.
Contextual
Never just a date. Every report carries the who, when, and how: modern observances compared to their founding documents or cultural roots, parsed by geography and founding entity.
Transparent
Origin statements cite primary sources and link founding documents whenever available. AI assists in processing datasets and drafting initial text; the Holiday Calendar team fact-checks and audits every label, name, and date pattern.
Everything in the public consciousness
Our scope is absolute. Every entry in the registry falls into one of three evidence classes.
Legislative & City Mandates
Holidays born from legislative action, federal law, or local municipal proclamations.
Institutional & Brand Initiatives
Observances promoted by organizations and brands to celebrate industries or champion causes.
Cultural Emergence
Traditions that arise organically from social media, local news, and grassroots community movements.
A strict hierarchy of evidence
For established mandates, our research team works down a fixed ladder of primary sources. For cultural holidays where a founding entity is nebulous, we conduct exhaustive research into the earliest documented emergence instead.
Both paths end in the same place: an entry preserved in the Global Holiday Archive with the same level of care.
See an error? The research board reviews every report.
Questions about the data and corrections go to the research team. Media inquiries and partnerships go to press@holidaycalendar.io.