A calendar date is a reference to a particular day represented within a calendar system. The calendar date allows the specific day to be identified. The number of days between two dates may be calculated. For example, "25 October 2024" is ten days after "15 October 2024". The date of a particular event depends on the observed time zone. For example, the air attack on Pearl Harbor that began at 7:48 a.m. Hawaiian time on 7 December 1941 took place at 3:18 a.m. Japan Standard Time, 8 December in Japan.
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. The standard provides a well-defined, unambiguous method of representing calendar dates and times in worldwide communications, especially to avoid misinterpreting numeric dates and times when such data is transferred between countries with different conventions for writing numeric dates and times.
Programming style, also known as coding style, refers to the conventions and patterns used in writing source code, resulting in a consistent and readable codebase. These conventions often encompass aspects such as indentation, naming conventions, capitalization, and comments. Consistent programming style is generally considered beneficial for code readability and maintainability, particularly in collaborative environments.
The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. and p.m.. Each period consists of 12 hours numbered: 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11. The 12-hour clock has been developed since the second millennium BC and reached its modern form in the 16th century.
The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. This is indicated by the hours passed since midnight, from 00(:00) to 23(:59), with 24(:00) as an option to indicate the end of the day. This system, as opposed to the 12-hour clock, is the most commonly used time notation in the world today, and is used by the international standard ISO 8601.
Hungarian grammar is the grammar of Hungarian, a Finno-Ugric language that is spoken mainly in Hungary and in parts of its seven neighboring countries.
Philippine Standard Time, also known as Philippine Time (PHT), is the official name for the time zone used in the Philippines. The country only uses a single time zone, at an offset of UTC+08:00, but has used daylight saving time for brief periods in the 20th century until July 28, 1990.
Different conventions exist around the world for date and time representation, both written and spoken.
Hungarian orthography consists of rules defining the standard written form of the Hungarian language. It includes the spelling of lexical words, proper nouns and foreign words (loanwords) in themselves, with suffixes, and in compounds, as well as the hyphenation of words, punctuation, abbreviations, collation, and other information.
Nautical time is a maritime time standard established in the 1920s to allow ships on high seas to coordinate their local time with other ships, consistent with a long nautical tradition of accurate celestial navigation. Nautical time divides the globe into 24 nautical time zones with hourly clock offsets, spaced at 15 degrees by longitudinal coordinate, with no political deviation.
France most commonly records the date using the day-month-year format with an oblique stroke or slash as the separator with numerical values. The 24-hour clock is used to express time, using the letter h as the separator in between hours and minutes.
In Poland, the official system for representing dates and times follows the international ISO 8601 standard. However, in less official use, other conventions prevail, such as the day-month-year order and several Polish language abbreviations.
In Spain, date notation follows the DD/MM/YYYY format. Time notation depends on the level of formality and varies in written and spoken formats. Official time is given using the 24-hour clock, and the 12-hour clock is often used in informal speech.
Date and time notation in Sweden mostly follows the ISO 8601 standard: dates are generally written in the form YYYY-MM-DD. Although this format may be abbreviated in a number of ways, almost all Swedish date notations state the month between the year and the day. Months are not capitalised when written. The week number may also be used in writing and in speech. Times are generally written using 24-hour clock notation, with full stops as separators, although 12-hour clock notation is more frequently used in speech.
Date and time notation in the United Kingdom records the date using the day–month–year format. The time can be written using either the 24-hour clock (23:59) or the 12-hour clock (11:59 p.m.).
The most formal manner of expressing the full date and/or time in South Korea is to suffix each of the year, month, day, ante/post-meridiem indicator, hour, minute and second with the corresponding unit and separating each with a space:
Date and time notation in Italy records the date using the day–month–year format. The time is written using the 24-hour clock (14:04); in spoken language and informal contexts the 12-hour clock is more commonly adopted, but without using "a.m." or "p.m." suffixes (2:04).
Noon is a Cangin language of Senegal spoken in the Thiès region. There is an estimated population of 10,000- 50,000 speakers worldwide, rendering this language to be vulnerable. Ethnologue reports that it is 84% cognate with Lehar, essentially a divergent dialect, and 68% cognate with the other Cangin languages.
Hungary is in the Central European Time zone, which is one hour ahead of Coordinated Universal Time (UTC). The country observes Daylight Saving Time (DST). DST was first introduced in Hungary in 1916 and was observed until 1919. It was also in use between 1941–1949 and 1954–1957. DST has been in use again since 1980.
