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The longer "month" may be set as the first (5–4–4), second (4–5–4), or third (4–4–5) unit. Its major advantage over a regular calendar is that each period is the same length and ends on the same day of the week, which is useful for planning manufacturing or work shifts.
Second quarter, Q2: April 1 – June 30 (91 days) Third quarter, Q3: July 1 – September 30 (92 days) Fourth quarter, Q4: October 1 – December 31 (92 days) In some domains, weeks are preferred over months for scheduling and reporting, so they use quarters of exactly 13 weeks each, often following ISO week date conventions. One in five to six ...
On average, the intermediate phases last one-quarter of a synodic month, or 7.38 days. [ b ] The term waxing is used for an intermediate phase when the Moon's apparent shape is thickening, from new to a full moon; and waning when the shape is thinning.
A lunisolar calendar was found at Warren Field in Scotland and has been dated to c. 8000 BC, during the Mesolithic period. [2] [3] Some scholars argue for lunar calendars still earlier—Rappenglück in the marks on a c. 17,000 year-old cave painting at Lascaux and Marshack in the marks on a c. 27,000 year-old bone baton—but their findings remain controversial.
Celestial sphere-based: as in sidereal time, where the apparent movement of the stars and constellations across the sky is used to calculate the length of a year. These units do not have a consistent relationship with each other and require intercalation. For example, the year cannot be divided into twelve 28-day months since 12 times 28 is 336 ...
If the surviving spouse receives 100 percent of the deceased annuitant’s payout, monthly payments range from $4,852 to $5,543 per month based on quotes for a 65-year-old man and a 60-year-old woman.
The day-month-year order has been increasing in usage since the early 1980s. The month is usually written as an abbreviated name, as in "19 Jul 1942" (sometimes with hyphens). [5] Many genealogical databases and the Modern Language Association citation style use this format.
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