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  2. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    Its value is 0, 1, or 2 at different times of the year. Subtracting it leaves a small positive or negative fractional number of half turns, which is multiplied by 720, the number of minutes (12 hours) that the Earth takes to rotate one half turn relative to the Sun, to get the equation of time.

  3. 1990–91 United States network television schedule - Wikipedia

    en.wikipedia.org/wiki/1990–91_United_States...

    The 1990–91 network television schedule for the four major English language commercial broadcast networks in the United States covers primetime hours from September 1990 through August 1991. The schedule is followed by a list per network of returning series, new series, and series cancelled after the 1989–90 season .

  4. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    This does not apply to the binary minus operation '−'; for example in Microsoft Excel while the formulas =-2^2, =(-2)^2 and =0+-2^2 return 4, ...

  5. Hour - Wikipedia

    en.wikipedia.org/wiki/Hour

    The time of day is typically expressed in English in terms of hours. Whole hours on a 12-hour clock are expressed using the contracted phrase o'clock, from the older of the clock. [6] (10 am and 10 pm are both read as "ten o'clock".) Hours on a 24-hour clock ("military time") are expressed as "hundred" or "hundred hours".

  6. 24-hour clock - Wikipedia

    en.wikipedia.org/wiki/24-hour_clock

    A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of full minutes that have passed since the last full hour, and ss (00 to 59) is the number of seconds since the ...

  7. Operation (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Operation_(mathematics)

    In mathematics, an operation is a function from a set to itself. For example, an operation on real numbers will take in real numbers and return a real number. An operation can take zero or more input values (also called "operands" or "arguments") to a well-defined output value.

  8. Length of stay - Wikipedia

    en.wikipedia.org/wiki/Length_of_stay

    The term "average length of stay" (ALOS) is also applicable to other industries, e.g. entertainment, event marketing, trade show and leisure. ALOS is used to determine the length of time an attendee is expected to spend on a site or in a venue and is part of the calculation used to determine the gross sales potential for selling space to vendors etc. and affects everything from parking to ...

  9. Naismith's rule - Wikipedia

    en.wikipedia.org/wiki/Naismith's_rule

    The simplicity of this approach is that the time taken can be easily adjusted for an individual's own (chosen) speed on the flat; at 8 km/h (flat speed) the route will take 4 hours and 6 minutes. The rule has been tested on fell running times and found to be reliable. [17] Scarf proposed this equivalence in 1998. [4] [6]