
	Where results make sense

Topic: Calculating the day of the week

Related Topics

Doomsday algorithm

Calendar

Gregorian Calendar

ISO 8601

Friday 13

Sunday

Tuesday

1901

List of algorithms

Algorithm

Halloween

July 11

November 1

	Calculating the day of the week - Wikipedia, the free encyclopedia
		3 The algorithm to calculate the day of the week
		The algorithm to calculate the day of the week
		January 16 and February 6 are the same day of the week as the previous last day of February (i.e.
	en.wikipedia.org /wiki/Calculating_the_day_of_the_week (2285 words)

	Gregorian calendar
		This is 365;14,33 days in sexagesimal notation - the length of the tropical year, rounded to two sexagesimal positions; this was the value used in the major astronomical tables of the day.
		Although close to the mean tropical year of 365.2422 days, it is even closer to the vernal equinox year of 365.2424 days; this fact made the choice of approximation particularly appropriate as the purpose of creating the calendar was to ensure that the vernal equinox would be near a specific date (March 21).
		The day of the week was repeated on successive days because the International Date Line was shifted from east of to west of Alaska along with the change to the Gregorian calendar.
	www.brainyencyclopedia.com /encyclopedia/g/gr/gregorian_calendar.html (3973 words)

	Day - Facts, Information, and Encyclopedia Reference article
		A day, as opposed to night, is commonly defined as the period during which sunlight directly reaches the ground, assuming that there are no local obstacles.
		In astronomy, the sidereal day is also used; it is about 3 minutes 56 seconds shorter than the solar day, and close to the actual rotation period of the Earth, as opposed to the Sun's apparent motion.
		Days such as Christmas Eve, Hallowe'en, and the Eve of Saint Agnes are the remnants of the older pattern when holidays began the evening before.
	www.startsurfing.com /encyclopedia/d/a/y/Day.html (1303 words)

	CalendarHome.com - Julian day - Calendar Encyclopedia
		Astronomers adopted Herschel's Julian Days in the late 19th century, but using the meridian of Greenwich instead of Alexandria, after the former was made the Prime Meridian by international conference in 1884.
		Julian days are typically used by astronomers to date astronomical observations, thus eliminating the complications resulting from using standard calendar periods like eras, years, months, or weeks.
		The day of the week can be determined from the Julian day number by calculating it modulo 7, where 0 means Monday.
	encyclopedia.calendarhome.com /Julian_date.htm (1325 words)

	2013
		The basis of nearly all the algorithms to calculate the day of the week is: To number the days of the week from 0 to 6 so that we can then use arithmetic modulo 7 to add the number of days elapsed since the start of a known period (usually in practice a century).
		Calculating the day of the week - Corresponding months.
		Four numbers have to first be calculated to determine the day of the week, year, month, date and century value.
	www.experiencefestival.com /2013 (1156 words)

	Calendar Home.com - How to be a Human Calendar
		Have you ever heard of people who can calculate the day-of-week for any date in their head?
		Click here for the flashcards to practice the whole process for the 1900's.
		Click here to show the process when the date is anywhere between 1800 and 2199.
	www.calendarhome.com /human (385 words)

Try your search on: Qwika (all wikis)