format: meaning/draft-1
id: calendar
name: Calendar and time
description: Time concepts that keep their meaning across representations.
license: CC0-1.0
concepts:
  - id: date
    kind: attribute
    labels:
      en: Date
      ru: Дата
    synonyms:
      en: [day, calendar date]
      ru: [день, календарная дата]
    description: >-
      A calendar day: year, month and day, without a time of day. A dataset
      that stores a timestamp whose time is always midnight can treat it as a
      date. Questions that ask "when", "which year" or "which month" group by
      a date.