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  2. Academic quarter (class timing) - Wikipedia

    en.wikipedia.org/wiki/Academic_quarter_(class...

    Academic quarter only applies to time given in full hours, and the academic quarter can be removed by saying that the time is "on the dot" by adding the word "dot" ("prick" in Swedish) or an actual ".". E.g. 10 dot is 10:00. The dot removes one academic quarter, so in the evening time "on the dot" is written "dot dot" to remove both quarters.

  3. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    Fifteen minutes is often called a quarter hour, and thirty minutes is often known as a half hour. For example, 5:15 can be phrased "(a) quarter past five" or "five-fifteen"; 5:30 can be "half past five", "five-thirty" or simply "half five". The time 8:45 may be spoken as "eight forty-five" or "(a) quarter to nine". [17] In older English, it was ...

  4. Hour - Wikipedia

    en.wikipedia.org/wiki/Hour

    Non-SI units. 60 min. Midnight to 1 a.m. on a 24-hour clock with a digital face. An hour (symbol: h; [1] also abbreviated hr) is a unit of time historically reckoned as 1⁄24 of a day and defined contemporarily as exactly 3,600 seconds (SI). There are 60 minutes in an hour, and 24 hours in a day.

  5. Carnegie Unit and Student Hour - Wikipedia

    en.wikipedia.org/wiki/Carnegie_Unit_and_Student_Hour

    A semester (one-half of a full year) earns 1/2 a Carnegie Unit. [1] The Student Hour is approximately 12 hours of class or contact time, approximately 1/10 of the Carnegie Unit (as explained below). As it is used today, a Student Hour is the equivalent of one hour (50 minutes) of lecture time for a single student per week over the course of a ...

  6. Westminster Quarters - Wikipedia

    en.wikipedia.org/wiki/Westminster_Quarters

    The Westminster Quarters, from its use at the Palace of Westminster, is a melody used by a set of four quarter bells to mark each quarter-hour. It is also known as the Westminster Chimes, Cambridge Quarters, or Cambridge Chimes, from its place of origin, the Church of St Mary the Great, Cambridge. [1]: 7–8.

  7. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    One décime is equal to 10 decimal minutes, which is nearly equal to a quarter-hour (15 minutes) in standard time. Thus, "five hours two décimes" equals 5.2 decimal hours, roughly 12:30 p.m. in standard time. [8][9] One hundredth of a decimal second was a decimal tierce.

  8. Repeater (horology) - Wikipedia

    en.wikipedia.org/wiki/Repeater_(horology)

    Repeater (horology) The 13 in (33 cm) watch by Louis Brandt (1892) was the first wristwatch with a minute repeater. The movement was manufactured by Audemars Piguet. A repeater is a complication in a mechanical watch or clock that chimes the hours and often minutes at the press of a button. There are many types of repeater, from the simple ...

  9. Traditional Chinese timekeeping - Wikipedia

    en.wikipedia.org/wiki/Traditional_Chinese...

    Since then, kè has been used as shorthand to talk about time in 1 ⁄ 8 of a double hour or 1 ⁄ 4 of a single hour. Their usage is similar to using "quarter hour" for 15 minutes or "half an hour" for 30 minutes in English. For example, 6:45 can be written as "6 diǎn, 3 kè" (六点 三 刻; 六點 三 刻). Miǎo is now the standard term ...