Search results
An hour (symbol: h; also abbreviated hr) is a unit of time historically reckoned as 1 ⁄ 24 of a day and defined contemporarily as exactly 3,600 seconds . There are 60 minutes in an hour, and 24 hours in a day. The hour was initially established in the ancient Near East as a variable measure of 1 ⁄ 12 of the night or daytime.
- 24-hour clock - Wikipedia
The modern 24-hour clock is the convention of timekeeping in...
- Hour - Simple English Wikipedia, the free encyclopedia
An hour (abbreviation: h or hr) is a unit of measurement...
- 24-hour clock - Wikipedia
hide. Beginning. Keeping time. Clock displays. Analog clocks. Digital clocks. Sounds. Types of clocks. Clock. Analog clock. A clock is a device that tells the time. Some clocks can only show the time. Other clocks can show other things.
The 24-hour clock is a way of telling the time in which the day runs from midnight to midnight and is divided into 24 hours, numbered from 0 to 23. It does not use a.m. or p.m.
24-hour Clock12-hour Clock00:0012:00 a.m., midnight (start of day)01:001:00 a.m.02:002:00 a.m.03:003:00 a.m.2 days ago · Learn the definition, etymology, pronunciation, and usage of the word hour in English and other languages. Find out the symbols, synonyms, derived terms, and translations of hour.
Article History. Related Topics: time. day. minute. unit. Notable Honorees: Paavo Nurmi. hour, in timekeeping, 3,600 seconds, now defined in terms of radiation emitted from atoms of the element cesium under specified conditions.
