hours

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An hour (symbol: h; also abbreviated hr.) is a unit of time conventionally reckoned as 1⁄24 of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.
The hour was initially established in the ancient Near East as a variable measure of 1⁄12 of the night or daytime. Such seasonal, temporal, or unequal hours varied by season and latitude.
Equal or equinoctial hours were taken as 1⁄24 of the day as measured from noon to noon; the minor seasonal variations of this unit were eventually smoothed by making it 1⁄24 of the mean solar day. Since this unit was not constant due to long term variations in the Earth's rotation, the hour was finally separated from the Earth's rotation and defined in terms of the atomic or physical second.
In the modern metric system, hours are an accepted unit of time defined as 3,600 atomic seconds. However, on rare occasions an hour may incorporate a positive or negative leap second, making it last 3,599 or 3,601 seconds, in order to keep it within 0.9 seconds of UT1, which is based on measurements of the mean solar day.

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  1. Matt1982

    WA Working hours

    When i first started my employment their were using a very expired enterprise barganing agrement from 2005 i started in2015 and in that stated it had to work 80 per fortnight and went and done a verbally agrement about changing to 76 hours now different management and they want me to change back...
  2. R

    QLD Employee Maximum Weekly Work Hours

    Hi, I was hoping someone was able to please give me some insight into maximum work hours for full time employees. My boss sent out a company email advising that they "expect" us to work 8:30am to 5:00pm with only a half an hour break or 8:30am to 5:30pm with an hour break (8 hour work day excl...
  3. M

    NSW Reduction of hours

    (in the light of coronavirus crisis) can the reduction of weekly work hours by the employers be considered a breach of individual employment contract?
  4. B

    ACT Working 'reasonable unpaid overtime'

    Hello, I am writing in the hope that someone can assist me with some employment advice, specifically relating to what is 'reasonable overtime'. I work for a government agency, and a year ago I was sent to work overseas by my employer. Normally, there is an Enterprise Agreement that covers...