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  2. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    The American Heritage Dictionary of the English Language states "By convention, 12 AM denotes midnight and 12 PM denotes noon. Because of the potential for confusion, it is advisable to use 12 noon and 12 midnight". [34] E. G. Richards in his book Mapping Time (1999) provided a diagram in which 12 a.m. means noon and 12 p.m. means midnight. [35]

  3. Shift plan - Wikipedia

    en.wikipedia.org/wiki/Shift_plan

    The shift plan, rota or roster (esp. British) is the central component of a shift schedule in shift work. [1] The schedule includes considerations of shift overlap, shift change times and alignment with the clock, vacation, training, shift differentials, holidays, etc.

  4. Shift work - Wikipedia

    en.wikipedia.org/wiki/Shift_work

    Shift work increases the risk for the development of many disorders. Shift work sleep disorder is a circadian rhythm sleep disorder characterized by insomnia, excessive sleepiness, or both. Shift work is considered essential for the diagnosis. [9] The risk of diabetes mellitus type 2 is increased in shift workers, especially men. People working ...

  5. Noon - Wikipedia

    en.wikipedia.org/wiki/Noon

    Noon (also known as noontime or midday) is 12 o'clock in the daytime. It is written as 12 noon, 12:00 m. (for meridiem, literally 12:00 midday), 12 p.m. (for post meridiem, literally "after midday"), 12 pm, or 12:00 (using a 24-hour clock) or 1200 (military time). Solar noon is the time when the Sun appears to contact the local celestial meridian.

  6. What Do AM and PM Stand For? - AOL

    www.aol.com/am-pm-stand-153002424.html

    PM stands for “post meridiem,” meaning “after noon” or “after midday,” and as such applies to the times from noon onward. English-speaking countries have been using the “AM” and ...

  7. Business hours - Wikipedia

    en.wikipedia.org/wiki/Business_hours

    In Mexico, the standard business hours are from 7 am to 2 pm and 4 pm to 6 pm. (At least in Mexico City most offices open between 8 and 10 am and close around 6 or 7 pm. Some offices close early on Friday. Many offices have their employees work Saturdays until lunch time (usually 2 pm). Other countries have different business hour patterns.

  8. Shift work can kill you 15 years sooner, warns Whoop’s chief ...

    www.aol.com/finance/shift-kill-15-years-sooner...

    People who work constantly changing shifts often hold some of the most challenging and yet vital roles in society: doctors, nurses, firefighters, shop workers, and the police to name a few.

  9. Effects of time zones on North American broadcasting

    en.wikipedia.org/wiki/Effects_of_time_zones_on...

    Similarly, as sports programs would normally air weekend afternoons on the east coast on major TV networks and late mornings on the west, the weekend editions of national morning news shows could air on the west as early as 5:00 or 6:00 a.m. PT. News channels such as CNN and sports channels such as ESPN that frequently broadcast live events ...