MediaWiki:Pagetriage-info-timestamp-date-format/qqq
Format specifier for the date. Month and weekday names will be localized. For formats, see:
This is a machine-readable date format string! It is used by a function to format a date. It will not be read directly by a human user. Do not translate each letter literally! Instead insert the date format for your language using the English-based letters for coding the date part placeholders.
If your language requires some words between the different parts of the timestamp (for example in the Galician language the words de and ás are inserted as: d de MMMM de yyyy ás HH:mm) then the text needs to be put inside square brackets so as not to taken as placeholder codes for date parts by the software (in Galician this is: d [de] MMMM [de] yyyy [ás] HH:mm).