Cosma Home > Communication > Knowledge > Realm > Chronology > Calendar
Spotlight
Ditch your phone’s default calendar for one of these apps (Sarah Mitroff, CNET)
Microsoft Sunrise Calendar Shutting Down: Here Are The Best Alternatives (Horia Ungureanu, Tech Times)
Related
Subjects
Geography (Map)
Chronology (Clock, Calendar)
Subheadings
Cosmological (Cosmos, Being)
Physical (Universe, Mass)
Terrestrial (Earth, Life)
Anthropological (World, Human)
Mystical (Other Place, Other Being)
Resources
These are organized by a classification scheme developed exclusively for Cosma. More…
General
Portal
Dictionary
calendar : a system for fixing the beginning, length, and divisions of the civil year and arranging days and longer divisions of time (as weeks and months) in a definite order — Webster
Oxford, OneLook, Free Dictionary, Wiktionary, InfoPlease, Word Reference, Urban Dictionary
Thesaurus
Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords
Encyclopedia
Calendar is a system of organizing days for social, religious, commercial, or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months, and years. A date is the designation of a single, specific day within such a system. Periods in a calendar (such as years and months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon. Many civilizations and societies have devised a calendar, usually derived from other calendars on which they model their systems, suited to their particular needs. A calendar is also a physical device (often paper) or computer program. — Wikipedia (List of Calendars)
David Darling’s Internet Encyclopedia of Science (Curiosities), Britannica, Columbia (Infoplease)
Directory
DMOZ Open Directory Project (AOL)
Search
Preservation
History
Calendars through the Ages (Claus Tøndering, Web Exhibits)
History of the Calendar (InfoPlease)
Calendar Converter (Fourmilab)
Rosetta Calendar (Scott E. Lee)
Calendar conversion service converting dates into corresponding days in different systems.
Find out what equivalent dates are in the Gregorian, Julian, or Hebrew calendars.
Quotation
Museum
Museum of Creative Calendar Design (Unicorn Graphics)
Library
WorldCat, Library of Congress, UPenn Online Books, Open Library
Participation
Education
Course
OER Commons: Open Educational Resources
Open Education Consortium
Community
Forum
Blog
News
Book
Government
Document
Expression
Reform?
Calendar reform roperly calendrical reform, is any significant revision of a calendar system. The term sometimes is used instead for a proposal to switch to a different calendar. Most calendars have several rules which could be altered by reform:
Whether and how days are grouped into subdivisions such as months and weeks, and days outside those subdivisions, if any.
Which years are leap years and common years and how they differ.
Numbering of years, selection of the epoch, and the issue of year zero.
Start of the year (such as southern solstice, January 1, March 1, northward equinox, Easter).
If a week is retained, the start, length, and names of its days.
Start of the day (midnight, sunrise, noon, or sunset).
If months are retained, number, lengths, and names of months,
Special days and periods (such as leap day or intercalary day).
Alignment with social cycles.
Alignment with astronomical cycles.
Alignment with biological cycles.
Literal notation of dates. — Wikipedia
The World Calendar (The World Calendar Association)
Example of a proposal that proposes a 12-month, perennial calendar with equal quarters, and explains the advantages of this calendar.
Calendar reform (Bill Collins)
Summary of Reform Calendars (Calendar Zone)
Annotated list of sites with proposed calendars and information about calendar reform.
Toy
Poem
OEDILF: The Omnificent English Dictionary In Limerick Form
