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1. Reference
2. PurposeThe purpose of this standard is to define the numeric format for calendar dates for the purpose of interchange of machine-readable data between departments and agencies. The term "Gregorian Date", as frequently used in Electronic Data Processing parlance, is the equivalent of the term "Calendar Date" as used in this document, i.e. date format consisting of three numeric fields to represent year, month and day of month respectively. The term "Julian Date", also frequently used in EDP parlance, is the equivalent of the term "Ordinal Date" as used in this document, i.e. date format consisting of two numeric fields, often conjoined, to represent year and sequential day within the year commencing with 001 for January 1st. 3. ApplicationThis standard shall apply when describing either calendar or ordinal dates in an all-numeric form for interchange of machine-readable data between departments and agencies. 4. Qualifications4.1 Sequence An all-numeric date consists of the following data elements from left to right: (Calendar) year-month-day (Ordinal) year-day of year 4.2 Characters Arabic numerals from set 0, 1, 2, ... 9 are used. 4.3 Elements 4.3.1 A calendar date consists of three elements: 4.3.2 An ordinal date consists of two elements: 4.4 Separators For person-to-machine (input) or machine-to-person (output) purposes, as well as for person-to-person purposes, the calendar date may be edited by the inclusion of either of the separators space or hyphen to partition the elements, e.g.: (a) 1975 07 0l (space separators) but the internal machine representation does not include separators. 5. ImplementationThe permitted period for conformance to this standard shall not exceed six months subsequent to its publication date. 6. Government Standards Working GroupG.E. Henderson (Chairman) 7. Where to Obtain CopiesCopies of the technical specification may be obtained as follows: FIPS PUB 4-1, Representation for calendar date and ordinal date for information interchange National Technical Information Service (NTIS) Data elements and interchange format - Information interchange - Representation of
dates and times Standards Council of Canada Tel.: (613) 238-3222 Web: http://www.scc.ca/en/index.shtml CAN/CSA-Z243.4-89, All-numeric date and time |
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