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JSON Data Format

JSON (JavaScript Object Notation) is a relatively compact format that allows for arbitrary complexity. One line of text represents a holiday. See for a complete description.

Empty fields are represented by "".

All data is provided in UTF-8.


 "description":"New Year's Day","type":"NF","notes":""}


locale is a combination of an ISO 639-1 language code, such as "en" (English), and an ISO 3166-1 alpha-2 country code, such as "US" (United States), separated by a hyphen.

region is a subdivision of locale, for those locales that have regional holidays. For example, Patriot's Day is only observed in the en-US locale in Massachusetts and Maine, so there are entries for each of those states.

date is provided in YYYY-MM-DD format.

description is text that simply describes the holiday.

type is a collection of single-character indicators, that describe the holiday. "N" means national holiday, which means locale-wide. "R" means it is a religious holiday. "F" means the holiday is fixed, or on the same day each year. "V" means variable and is typically tied to a Monday, or the third Thursday, for example.

notes are provided in some cases for clarification, but are not to be used as part of the holiday description.