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  2. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    The equation of time is obtained from a published table, or a graph. For dates in the past such tables are produced from historical measurements, or by calculation; for future dates, of course, tables can only be calculated. In devices such as computer-controlled heliostats the computer is often programmed to calculate the equation of time.

  3. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    The Jiffy is the amount of time light takes to travel one femtometre (about the diameter of a nucleon). The Planck time is the time that light takes to travel one Planck length. The TU (for time unit) is a unit of time defined as 1024 μs for use in engineering. The svedberg is a time unit used for sedimentation rates (usually

  4. Carnegie Unit and Student Hour - Wikipedia

    en.wikipedia.org/wiki/Carnegie_Unit_and_Student_Hour

    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 semester, usually 14 to 16 weeks.

  5. Hour angle - Wikipedia

    en.wikipedia.org/wiki/Hour_angle

    For example, at 10:30 AM local apparent time the hour angle is −22.5° (15° per hour times 1.5 hours before noon). [ 4 ] The cosine of the hour angle (cos( h )) is used to calculate the solar zenith angle .

  6. Date and time representation by country - Wikipedia

    en.wikipedia.org/wiki/Date_and_time...

    The little-endian format (day, month, year; 1 June 2022) is the most popular format worldwide, followed by the big-endian format (year, month, day; 2006 June 1). Dates may be written partly in Roman numerals (i.e. the month) [citation needed] or written out partly or completely in words in the local language.

  7. 3 retirement rules that will tell you exactly how much you ...

    www.aol.com/finance/3-retirement-rules-tell...

    For example, if your spending is $60,000 each year and you’re planning to retire in 10 years, you’ll want to build in an inflation adjustment — perhaps 3 percent annually — to get a better ...

  8. Beyond your driving record: Can your credit score affect your ...

    www.aol.com/finance/car-insurance-credit-score...

    In most states, your credit score can be used to calculate your car insurance premium. ... Make your payments on time. Work to avoid any past due or unpaid balances. Your payment history is a ...

  9. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    A plot of hours of daylight as a function of the date for changing latitudes. This plot was created using the simple sunrise equation, approximating the sun as a single point and does not take into account effects caused by the atmosphere or the diameter of the Sun.