For calendar dates, the common alphanumeric method remains acceptable, provided that cardinal numbers are used:
When the day and month only are given, cardinal or ordinal forms may be used:
Note also the usage
For the use of the comma in dates, see 7.20 Dates, geographical names and addresses.
The all-numeric form of dating may be more appropriate for such purposes as office memorandums and chronological files and on documents such as certificates, forms and plaques that are presented in both official languages. The format prescribed below is in accordance with the Treasury Board Federal Identity Program Manual, National Standard of Canada CAN/CSA-Z234.4-87 and International Standard ISO 2014. The year, month and day should be separated by a space or hyphen, as illustrated:
The advantage of international standardization in this format is that, whereas 2/06/95 could mean either June 2, 1995 or February 6, 1995, the form 1995-06-02 can mean only the former.
Dates are sometimes spelled out in cases such as the following:
Dates are spelled out in legal texts and in formal invitations and announcements:
Year designations take the following forms:
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