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The expected date at which the rate of production of a consumable equals the rate at which the item is required by the Armed Forces. (US) Q-Day 23 June 1945, the day of the dress rehearsal of the first atom bomb test [8] nowadays it is sometimes used informally to mean "Quality Day", or the first day of the calendar quarter. R-Day
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).
The 24-hour clock is used in military, public safety, and scientific contexts in the United States. [4] It is best known for its use by the military and is therefore commonly called "military time". In U.S. military use, 24-hour time is traditionally written without a colon (1800 instead of 18:00).
The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone. The military time zone system ensures clear ...
The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from Latin ante meridiem, translating to "before midday") and p.m. (from Latin post meridiem, translating to "after midday"). [1] [2] Each period consists of 12 hours numbered: 12 (acting as 0), [3] 1, 2, 3, 4
For month day year use {{12-hour time|format=mdy}}, for example 3:14 pm on December 3, 2024; The default is not to show seconds or the day of the week. To display these use {{12-hour time|sec=on}} and/or {{12-hour time|dow=on}} respectively, for example 3:14:55 pm on 3 December 2024; 3:14 pm on Tuesday 3 December 2024; 3:14:55 pm on Tuesday 3 ...
The default date format is day month year. For month day year use {{12-hour time|format=mdy}}, for example 6:20 am on December 4, 2024; The default is not to show seconds or the day of the week. To display these use {{12-hour time|sec=on}} and/or {{12-hour time|dow=on}} respectively, for example 6:20:43 am on 4 December 2024; 6:20 am on ...
In Czech quarters and halves always refer to the following hour, e.g. čtvrt na osm (quarter on eight) meaning 7:15, půl osmé (half of eight) meaning 7:30 and tři čtvrtě na osm (three-quarters on eight) meaning 7:45. This corresponds to the time between 7:00 and 8:00 being the eighth hour of the day (the first hour starting at midnight).