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  2. Calendrical calculation - Wikipedia

    en.wikipedia.org/wiki/Calendrical_calculation

    A calendrical calculation is a calculation concerning calendar dates. Calendrical calculations can be considered an area of applied mathematics. Some examples of calendrical calculations: Converting a Julian or Gregorian calendar date to its Julian day number and vice versa (see § Julian day number calculation within that article for details).

  3. International Fixed Calendar - Wikipedia

    en.wikipedia.org/wiki/International_Fixed_Calendar

    The calendar year has 13 months with 28 days each, divided into exactly 4 weeks (13 × 28 = 364). An extra day added as a holiday at the end of the year (after December 28, i.e. equal to December 31 Gregorian), sometimes called "Year Day", does not belong to any week and brings the total to 365 days.

  4. 360-day calendar - Wikipedia

    en.wikipedia.org/wiki/360-day_calendar

    The 360-day calendar is a method of measuring durations used in financial markets, in computer models, in ancient literature, and in prophetic literary genres.. It is based on merging the three major calendar systems into one complex clock [citation needed], with the 360-day year derived from the average year of the lunar and the solar: (365.2425 (solar) + 354.3829 (lunar))/2 = 719.6254/2 ...

  5. Quarter-to-date - Wikipedia

    en.wikipedia.org/wiki/Quarter-To-Date

    Quarter-to-date (QTD) is a period starting at the beginning of the current quarter and ending at the current date.Quarter-to-date is used in many contexts, mainly for recording results of an activity in the time between a date (exclusive, since this day may not yet be “complete”) and the beginning of either the calendar or fiscal quarter.

  6. Fiscal Quarters (Q1, Q2, Q3, Q4) Explained and What ... - AOL

    www.aol.com/finance/fiscal-quarters-q1-q2-q3...

    Any financial statements you receive from April 1 to June 30 are for Q2 of the fiscal quarter system. For companies on a calendar quarter, Q2 brings the all-important tax deadline for the prior ...

  7. ISO week date - Wikipedia

    en.wikipedia.org/wiki/ISO_week_date

    Although the days of a month (except February) always belong to 5 and sometimes 6 different weeks, there would never be 6 weeks belonging to a single month. The 5-week months would meet one of the following three criteria: The first day of the month is a ... Thursday and the month has 29 through 31 days. Wednesday and the month has 30 or 31 days.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Quarter days - Wikipedia

    en.wikipedia.org/wiki/Quarter_days

    The cross-quarter days are four holidays falling in between the quarter days: Candlemas (2 February), May Day (1 May), Lammas (1 August), and All Hallows (1 November). At many schools, class terms would begin on the quarter days; for example, the autumn term would start on 29 September, and thus continues to be called the Michaelmas term ...