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  2. Date and time notation in the United States - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in...

    Standard format: 1- or 2-digit day, the spelled-out month, and 4-digit year (e.g. 4 February 2023) Civilian format: spelled out month, 1-or 2-digit day, a comma, and the 4-digit year (e.g. February 4, 2023). [12] Date Time Group format, used most often in operation orders. This format uses DDHHMMZMONYY, with DD being the two-digit day, HHMM ...

  3. Date and time representation by country - Wikipedia

    en.wikipedia.org/wiki/Date_and_time...

    The little-endian format (day, month, year; 1 June 2022) is the most popular format worldwide, followed by the big-endian format (year, month, day; 2006 June 1). Dates may be written partly in Roman numerals (i.e. the month) [citation needed] or written out partly or completely in words in the local language.

  4. Date and time notation - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation

    Date and time notation around the world varies.. An approach to harmonize the different notations is the ISO 8601 standard.. Since the Internet is a main enabler of communication between people with different date notation backgrounds, and software is used to facilitate the communication, RFC standards and a W3C tips and discussion paper were published.

  5. Wikipedia:Current date and time - Wikipedia

    en.wikipedia.org/.../Wikipedia:Current_date_and_time

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  6. Time in the United States - Wikipedia

    en.wikipedia.org/wiki/Time_in_the_United_States

    American railroads maintained many different time zones during the late 19th century. Each train station set its own clock making it difficult to coordinate train schedules and confusing passengers. Time calculation became a serious problem for people traveling by train (sometimes hundreds of miles in a day), according to the Library of Congress.

  7. List of time zone abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zone...

    Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...

  8. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    The time 8:45 may be spoken as "eight forty-five" or "(a) quarter to nine". [19] In older English, it was common for the number 25 to be expressed as "five-and-twenty". [20] In this way the time 8:35 may be phrased as "five-and-twenty to 9", [21] although this styling fell out of fashion in the later part of the 1900s and is now rarely used. [22]

  9. History of time in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_time_in_the...

    The evolution of United States standard time zone boundaries from 1919 to 2024 in five-year increments. Plaque in Chicago marking the creation of the four time zones of the continental US in 1883 Colorized 1913 time zone map of the United States, showing boundaries very different from today Map of U.S. time zones during between April 2, 2006, and March 11, 2007.