ISO 8601 - Article Index

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - Dates
The standard uses the Gregorian calendar, already the de facto standard of international trade. The standard acknowledges that other cale...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - International Standard Dates
Continental Europeans use the hyphen to delineate parts within a written date. Germans and Slavs also used roman numerals for the month; ...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Examples Of Usage
Some strong examples of semantic changes caused by the placement of hyphens: Disease causing poor nutrition, meaning a disease that caus...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Rules And Customs Of Usage
Traditionally, the hyphen has been used in several ways: Except for noun-noun and adverb-adjective compound modifiers, when a compound m...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphens In Computing
In the ASCII character encoding, the hyphen was encoded as character 45. Technically, this character is called the hyphen-minus, as it is...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Origin And History Of The Hyphen
In medieval times and the early days of printing, when fonts all resembled Old English, the predecessor of the comma was a slash. As the ...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia - 24-hour Clock
The 24-hour clock is a convention of time-keeping in which the day runs from midnight to midnight and is divided into 24 hours, numb...   » Read the article

Encyclopedia - Astronomical Year Numbering: Encyclopedia - Astronomical Year Numbering
Astronomical year numbering is based on AD/BC / CE/BCE year numbering, but follows normal decimal integer numbering more strictly. Thus, ...   » Read the article

Encyclopedia - Hyphen: Encyclopedia - Hyphen
apostrophe ( ' ) ( ’ ) brackets ( ( ) ) ( [ ] ) ( { } ) ( 〈 〉 ) colon ( : ) comma ( , ) dashes ( ‒ ) ( – ) ...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia Ii - 24-hour Clock - Advantages
The 24-hour notation has many advantages over the 12-hour system: There is no possibility of ambiguity between times in the morning and ...   » Read the article

Encyclopedia - 1875: Encyclopedia - 1875
Canada - Mexico - South Africa - U.S. Rail Transport - Science - Sports Births - Deaths 1875 was a common year starting on Friday (see l...   » Read the article

Encyclopedia - Days Of The Week: Encyclopedia - Days Of The Week
In English the days of the week are: Sunday; Monday; Tuesday; Wednesday; Thursday; Friday; Saturday. Saturday and Sunday are commonly c...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia - Gregorian Calendar
The Gregorian calendar is the calendar that is used nearly everywhere in the world. A modification of the Julian calendar, it was first p...   » Read the article

Encyclopedia - Wednesday: Encyclopedia - Wednesday
Wednesday is considered either the third or the fourth day of the week, between Tuesday and Thursday. The name comes from the Old Englis...   » Read the article

Encyclopedia - Unix Time: Encyclopedia - Unix Time
Unix time, or POSIX time, is a system for describing points in time. It is widely used not only on Unix-like operating systems but in man...   » Read the article

Encyclopedia - Intercalation: Encyclopedia - Intercalation
The solar year does not have whole number of days, but a calendar year must have a whole number of days. The only way to reconcile the tw...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia Ii - 24-hour Clock - The 24-hour Clock In Spoken English
The time 18:30 is usually pronounced "eighteen thirty". In U.S. military usage, this is often followed by the word "hours", to clarify th...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia Ii - 24-hour Clock - Use By Country
24-hour clock - United States. The United States differs from other countries in that a significant fraction of its population may not ...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia Ii - 24-hour Clock - Description
A time in the 24-hour notation is written in the form hours:minutes (for example, 01:23), or hours:minutes:seconds (01:23:45). A leading ...   » Read the article

Encyclopedia - 24-hour Clock: Encyclopedia Ii - 24-hour Clock - Computer Support
In most countries, computers by default show the time in 24-hour notation. The 12-hour notation is typically set by default if a computer...   » Read the article

Encyclopedia - Week: Encyclopedia - Week
A week is a unit of time longer than a day and shorter than a month. In most modern calendars, including the Gregorian calendar, the week...   » Read the article

Encyclopedia - American And British English Differences: Encyclopedia - American And British English Differences
This article outlines the differences between American English, the form of the English language spoken in the United States, and Commonw...   » Read the article

Encyclopedia - 20th Century: Encyclopedia - 20th Century
The 20th century lasted from 1901 to 2000 in the Gregorian calendar. Common usage sometimes regards it as lasting from 1900 to 1999. The ...   » Read the article

Encyclopedia - Calendar Date: Encyclopedia - Calendar Date
A date in a calendar is a reference to a particular day by means of a calendar system. The calendar date allows the particular day to be ...   » Read the article

Encyclopedia - 20th Century: Encyclopedia Ii - 20th Century - Significant People
20th century - World leaders. Africa Gnassingbe Eyadema, Togo Félix Houphouët-Boigny, Côte d'Ivoire Kenneth Kaunda, Zambia Jomo Ke...   » Read the article

Encyclopedia - Days Of The Week: Encyclopedia Ii - Days Of The Week - Order
The week as we know it was introduced by astromancers around the 3rd century, replacing the Roman calendar in use until then. The order o...   » Read the article

Encyclopedia - Lexicographical Order: Encyclopedia Ii - Lexicographical Order - Case Of Multiple Products
Suppose is a collection of sets, with respective to total orderings The dictionary ordering of is then That is, if one of ...   » Read the article

Encyclopedia - List Of Calendars: Encyclopedia Ii - List Of Calendars - Proposed
List of calendars - Reform calendars. The following are proposed reforms of the Gregorian calendar Common-Civil-Calendar-and-Time Inte...   » Read the article

Encyclopedia - Monday: Encyclopedia Ii - Monday - Monday In Popular Culture
In the popular rhyme, "Monday's Child is fair of face". Mondays are considered "enemies" of the comic strip cat, Garfield. ... See also...   » Read the article

Encyclopedia - Sunday: Encyclopedia Ii - Sunday - The Name Sunday
In English, Sunday gets its name from Sunna, or Sunne the Germanic sun goddess. In ancient Jewish tradition Saturday is the sabbath. Chri...   » Read the article

Encyclopedia - Endianness: Encyclopedia Ii - Endianness - Logical And Arithmetical Description
When some computers store a 32-bit integer value in memory, for example 4A3B2C1D at address 100, they store the bytes within the address ...   » Read the article

Encyclopedia - Convention Du Mètre: Encyclopedia Ii - Convention Du Mètre - Signatories
There were originally 17 signatories to the treaty. This number grew to 21 in 1900, 32 in 1950, 44 by 1975, 48 by 1997, and 49 by 2001. A...   » Read the article

Encyclopedia - 3rd Millennium: Encyclopedia Ii - 3rd Millennium - Start And End Dates
3rd millennium - January 1 2001 - December 31 3000. For those who start counting their calendar from January 1, 1, then the third mille...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Origins
Although the Roman numerals are now written with letters of the Roman alphabet, they were originally separate symbols. The Etruscans, for...   » Read the article

Encyclopedia - Unix Time: Encyclopedia Ii - Unix Time - Definition
There are two layers of encoding that make up Unix time, and they can be usefully separated. The first layer encodes a point in time as a...   » Read the article

Encyclopedia - Thursday: Encyclopedia Ii - Thursday - Thursday In The United Kingdom
In the United Kingdom, all general elections since 1935 have been held on a Thursday, and this has become a tradition, although not a req...   » Read the article

Encyclopedia - Wednesday: Encyclopedia Ii - Wednesday - Wednesday In Popular Culture
In the popular rhyme, "Wednesday's Child is full of woe". The film Angel Heart includes a scene where Harry Angel refers to Wednesday as ...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - History
Gregorian calendar - Invention. The motivation of the Catholic Church in adjusting the calendar was to have Easter celebrated at the ti...   » Read the article

Encyclopedia - American And British English Differences: Encyclopedia Ii - American And British English Differences - Lexis
Most of the differences are in connection with concepts originating from the nineteenth century to the mid twentieth century, where new w...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - Rules And Customs Of Usage
Traditionally, the hyphen has been used in several ways: Except for noun-noun and adverb-adjective compound modifiers, when a compound m...   » Read the article

Encyclopedia - 1875: Encyclopedia Ii - 1875 - Events
1875 - January - April. January 12 - Kwang-su becomes emperor of China. February 27 - Newton Booth, 11th Governor of California resign...   » Read the article

Encyclopedia - Week: Encyclopedia Ii - Week - Later Use Of The Week
Various groups of citizens of the Roman Empire adopted the week, especially those who had spent time in the eastern parts of the empire, ...   » Read the article

Encyclopedia - 20th Century: Encyclopedia Ii - 20th Century - Important Developments, Events And Achievements
20th century - Science and technology. The assembly line and mass production of motor vehicles and other goods allowed manufacturers t...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Year In Roman Numerals
In seventeenth century Europe, using Roman numerals for the year of publication for books was standard; there were many other places it w...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Other Modern Usage By English-speaking Peoples
Roman numerals remained in common use until about the 14th century, when they were replaced by Arabic numerals (thought to have been intr...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Modern Non-english Speaking Usage
The above uses are customary for English-speaking countries. Although many of them are also maintained in other countries, those countrie...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Alternate Forms
In the Middle Ages, Latin writers used a horizontal line above a particular numeral to represent one thousand times that numeral, and add...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Xcix Or Ic?
Rules regarding Roman numerals often state that a symbol representing 10x may not precede any symbol larger than 10x+1. For example, C ca...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Iiii Or Iv?
The notation of Roman numerals has varied through the centuries. Originally, it was common to use IIII to represent "four", because IV re...   » Read the article

Encyclopedia - Sunday: Encyclopedia Ii - Sunday - Common Sunday Occurrences
Among Christians (with the exception of seventh-day sabbatarians, such as the denominations listed above) Sunday is considered holy and o...   » Read the article

Encyclopedia - Lexicographical Order: Encyclopedia Ii - Lexicographical Order - Monomials
In algebra it is traditional to order terms in a polynomial, by ordering the monomials in the indeterminates. This is fundamental, in ord...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Zero
In general, the number zero did not have its own Roman numeral, but the concept of zero as a number was well known by all medieval comput...   » Read the article

Encyclopedia - Roman Numerals: Encyclopedia Ii - Roman Numerals - Table Of Roman Numerals
The "modern" Roman numerals, post-Victorian era, are shown below: An accurate way to write large numbers in Roman numerals is to handle f...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - International Standard Dates
Continental Europeans use the hyphen to delineate parts within a written date. Germans and Slavs also used roman numerals for the month; ...   » Read the article

Encyclopedia - Endianness: Encyclopedia Ii - Endianness - Discussion Background Etymology
Big-endian numbers are easier to read when debugging a program. Some think they are less intuitive because the most significant byte is a...   » Read the article

Encyclopedia - Week: Encyclopedia Ii - Week - Facts And Figures
In a Gregorian mean year there are exactly 365.2425 days, and thus exactly 52.1775 weeks (unlike the Julian year of 365.25 days, which do...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Days Of The Week
January 1 of any year whose number is a multiple of 400 is a Saturday. From this you can work out the day of the week of any date. See al...   » Read the article

Encyclopedia - Endianness: Encyclopedia Ii - Endianness - Endianness In Date Formats
Endianness is simply illustrated by the different manners in which countries format calendar dates. For example, in the United States and...   » Read the article

Encyclopedia - Endianness: Encyclopedia Ii - Endianness - Endianness In Communications
In general, the NUXI problem is the problem of transferring data between computers with differing byte order. For example, the string "UN...   » Read the article

Encyclopedia - Endianness: Encyclopedia Ii - Endianness - Explanation
When a sequence of small units is used to form a larger ordinal value, convention must establish the order in which those smaller units a...   » Read the article

Encyclopedia - 20th Century: Encyclopedia Ii - 20th Century - Overview
The twentieth century saw a remarkable shift in the way that vast numbers of people lived, as a result of technological, medical, social,...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Numerical Facts
When leap years and common years are taken into account, there are a total of 14 possible Gregorian calendars. When different dates of Ea...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - Hyphens In Computing
In the ASCII character encoding, the hyphen was encoded as character 45. Technically, this character is called the hyphen-minus, as it is...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - Origin And History Of The Hyphen
In medieval times and the early days of printing, when fonts all resembled Old English, the predecessor of the comma was a slash. As the ...   » Read the article

Encyclopedia - Thursday: Encyclopedia Ii - Thursday - Thursday In Popular Culture
In the popular rhyme, "Thursday's Child has far to go". In The Hitchhiker's Guide to the Galaxy by Douglas Adams, the character Arthur De...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - International Standard Dates
Continental Europeans use the hyphen to delineate parts within a written date. Germans and Slavs also used roman numerals for the month; ...   » Read the article

Encyclopedia - Days Of The Week: Encyclopedia Ii - Days Of The Week - Names
In English all the days of the week are named after the ruling luminary, with most of the names coming from Anglo-Saxon gods and goddesse...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Confusion With British Vs. American Usage
Dates of events in Britain prior to 1752 are usually now shown in their original Old Style form, whereas dates of events in (then British...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Proleptic Gregorian Calendar
The Gregorian calendar can, for certain purposes, be extended backwards to dates preceding its official introduction, producing the prole...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Months Of The Year
The Gregorian calendar's year is divided into 12 months: English speakers sometimes remember the number of days in each month by the use ...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Accuracy
The Gregorian calendar improves the approximation made by the Julian calendar by skipping 3 Julian leap days in every 400 years, giving a...   » Read the article

Encyclopedia - Hyphen: Encyclopedia Ii - Hyphen - Examples Of Usage
Some strong examples of semantic changes caused by the placement of hyphens: Disease causing poor nutrition, meaning a disease that caus...   » Read the article

Encyclopedia - American And British English Differences: Encyclopedia Ii - American And British English Differences - Writing
American and British English differences - Spelling. Main article: American and British English spelling differences Some words share...   » Read the article

Encyclopedia - Thursday: Encyclopedia Ii - Thursday - Thursday In Religion
In the Hindu religion, Thursday is guruvar or the Guru's day. Quakers traditionally refer to Thursday as "Fifth Day" eschewing the pagan ...   » Read the article

Encyclopedia - 20th Century: Encyclopedia Ii - 20th Century - Important Developments Events And Achievements
20th century - Science and technology. The assembly line and mass production of motor vehicles and other goods allowed manufacturers t...   » Read the article

Encyclopedia - American And British English Differences: Encyclopedia Ii - American And British English Differences - Grammar
American and British English differences - Singular and plural for nouns. In British English, singular nouns that describe multiple pe...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Number Of Leap Years Starting On A Given Day Of The Week
Because there are 97 leap years in every 400 in the Gregorian Calendar, there should, in each "cycle", be either 13 or 14 leap years star...   » Read the article

Encyclopedia - Unix Time: Encyclopedia Ii - Unix Time - Time_t Parties
Unix enthusiasts have a history of holding time_t parties to celebrate significant values of the Unix time number. These are directly ana...   » Read the article

Encyclopedia - Unix Time: Encyclopedia Ii - Unix Time - History
The earliest versions of Unix time had a 32-bit integer incrementing at a rate of 60 Hz, which was the rate of the system clock on t...   » Read the article

Encyclopedia - Gregorian Calendar: Encyclopedia Ii - Gregorian Calendar - Calendar Seasonal Error
This image shows the difference between the Gregorian calendar and the seasons. The Y axis is "days error" and the X axis is Gregorian c...   » Read the article

Encyclopedia - Unix Time: Encyclopedia Ii - Unix Time - 32-bit Overflow
At 03:14:08 UTC on January 19, 2038 (+231), a 32-bit signed integer representation of Unix time will overflow. Systems using a 32-bit sig...   » Read the article

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - Time Interval
Time intervals specify an amount of time. They may be specified in four ways: Start and end, such as 2002-03-01T13:00:00Z/2003-05-11T15:...   » Read the article

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - Duration
Durations are represented by the format PnYnMnDTnHnMnS (nM may be replaced with nW to use the week format.) In this representation replac...   » Read the article

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - Times
ISO 8601 uses the 24-hour clock system that is used by much of the world. The basic format is hhmmss and the extended format is hh:mm:ss....   » Read the article

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - General Principles
Dates and times are self-contained, and do not rely on any external context for their values. They are entirely numerical in representati...   » Read the article

Encyclopedia - Iso 8601: Encyclopedia Ii - Iso 8601 - Combined Representations
Combining date and time representations is quite simple. It is in the format of <date>T<time>. The <date> and <time&...   » Read the article