Date and time notation in the United States information
Date and time notation systems in the United States
Date and time notation in the United States [refresh]
Full date
April 27, 2024 27 April 2024
All-numeric date
04/27/2024 2024-04-27 27 04 24 27 04 2024
Time
11:48 pm 23:48
Date and time notation in the United States differs from that used in nearly all other countries. It is inherited from one historical branch of conventions from the United Kingdom.[citation needed] American styles of notation have also influenced customs of date notation in Canada, creating confusion in international commerce.[1]
In traditional American usage, dates are written in the month–day–year order (e.g. April 27, 2024) with a comma before and after the year if it is not at the end of a sentence[2] and time in 12-hour notation (11:48 pm).
International date and time formats typically follow the ISO 8601 format (2024-04-27) for all-numeric dates,[3] write the time using the 24-hour clock (23:48),[4] and notate the date using a day–month–year format (27 April 2024).[5] These forms are increasingly common in American professional, academic, technological, military, and other internationally oriented environments.
^Sanderson, Blair (18 January 2016). "Proposed legislation aims to settle date debate". CBC News. Retrieved 25 September 2017.
^"9.31: Month and day". The Chicago Manual of Style (17 ed.). Chicago: The University of Chicago Press. 2017. ISBN 978-0-226-28705-8.
^"9.36: ISO style for dates". The Chicago Manual of Style (17 ed.). Chicago: The University of Chicago Press. 2017. ISBN 978-0-226-28705-8.
^Cite error: The named reference CMoS9.39 was invoked but never defined (see the help page).
^Cite error: The named reference CMoS9.35 was invoked but never defined (see the help page).
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