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  2. Choghadiya - Wikipedia

    en.wikipedia.org/wiki/Choghadiya

    Day 1: Sunrise at 6:00 AM and Sunset at 6:01 pm Day 2: Sunrise at 6:00 am. based on the above The daytime period is 12 hours and 01 minutes (721 minutes). The nighttime period is 11 hours and 59 minutes (719 minutes). Therefore, each daytime Choghadiya lasts 721/8 = 90.125 minutes = 1 hour 30 minutes 7.5 seconds And each night-time Choghadiya ...

  3. 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.

  4. Daylight saving time - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time

    Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.

  5. Date and time representation by country - Wikipedia

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

    In France and Vietnam, the common separator between hours and minutes is the letter "h" (18h45, for example). In Finland and Indonesia, the common separator between hours and minutes is a dot (18.45, for example). Date and time notation on the continents. Date and time notation in Africa; Date and time notation in Asia

  6. Date and time notation in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in...

    Date and time notation in the United Kingdom. Date and time notation in the United Kingdom records the date using the day–month–year format (31 December 1999, 31/12/99 or 31/12/1999). The time can be written using either the 24-hour clock (23:59) or the 12-hour clock (11:59 p.m.).

  7. Card counting - Wikipedia

    en.wikipedia.org/wiki/Card_counting

    Design and selection of systems. The primary goal of a card counting system is to assign point values to each card that roughly correlate to the card's "effect of removal" or EOR (that is, the effect a single card has on the house advantage once removed from play), thus enabling the player to gauge the house advantage based on the composition of cards still to be dealt.

  8. Standard time - Wikipedia

    en.wikipedia.org/wiki/Standard_time

    Standard time is the synchronization of clocks within a geographical region to a single time standard, rather than a local mean time standard. Generally, standard time agrees with the local mean time at some meridian that passes through the region, often near the centre of the region. Historically, standard time was established during the 19th ...

  9. Heating degree day - Wikipedia

    en.wikipedia.org/wiki/Heating_degree_day

    As total energy consumption is in kilowatt hours and heating degree days are [no. days×degrees] we must convert watts per kelvin into kilowatt hours per degree per day by dividing by 1000 (to convert watts to kilowatts), and multiplying by 24 hours in a day (1 kW = 1 kW⋅h/h).