|
Date And Time Notation
Date and time notation around the world varies. An approach to harmonise the different notations is the ISO 8601. (See also ISO 8601 usage) Since the Internet is a main enabler of communication between people with different date notation background, and software is used to facilitate the communication, RFC standards and W3C tips and discussion paper were published. * "Standard for the Format of Arpa Internet Text Messages" ** published 1982-08-13 ** e.g. used for email ** format: ay ,20 Jun 82 14:01:17 * "Internet Calendaring and Scheduling Core Object Specification" ** format: 19960401T235959Z * "Date and Time on the Internet: Timestamps" ** published July 2002 ** intended use: new internet protocols ** format: 1982-06-20 * W3C"Use international date format (ISO)" See also * Date and time representation by country * * Date code on a semiconductor package * Holocene calendar * Time formatting and storage bugs * Unix time Current Unix time () Unix time is a date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 8601
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the Geneva-based International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. The standard provides a well-defined, unambiguous method of representing calendar dates and times in worldwide communications, especially to avoid misinterpreting numeric dates and times when such data is transferred between countries with different conventions for writing numeric dates and times. ISO 8601 applies to these representations and formats: ''dates,'' in the Gregorian calendar (including the proleptic Gregorian calendar); ''times,'' based on the 24-hour timekeeping system, with optional UTC offset; ''time intervals''; and combinations thereof.ISO 8601:2004 section 1 Scope The standard does not assign specific meaning to any element of the dates/tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 8601 Usage
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the Geneva-based International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. The standard provides a well-defined, unambiguous method of representing calendar dates and times in worldwide communications, especially to avoid misinterpreting numeric dates and times when such data is transferred between countries with different conventions for writing numeric dates and times. ISO 8601 applies to these representations and formats: ''dates,'' in the Gregorian calendar (including the proleptic Gregorian calendar); ''times,'' based on the 24-hour timekeeping system, with optional UTC offset; ''time intervals''; and combinations thereof.ISO 8601:2004 section 1 Scope The standard does not assign specific meaning to any element of the dates/times ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet
The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a ''internetworking, network of networks'' that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and Web application, applications of the World Wide Web (WWW), email, electronic mail, internet telephony, telephony, and file sharing. The origins of the Internet date back to the development of packet switching and research commissioned by the United States Department of Defense in the 1960s to enable time-sharing of computers. The primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Request For Comments
A Request for Comments (RFC) is a publication in a series from the principal technical development and standards-setting bodies for the Internet, most prominently the Internet Engineering Task Force (IETF). An RFC is authored by individuals or groups of engineers and computer scientists in the form of a memorandum describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems. It is submitted either for peer review or to convey new concepts, information, or, occasionally, engineering humor. The IETF adopts some of the proposals published as RFCs as Internet Standards. However, many RFCs are informational or experimental in nature and are not standards. The RFC system was invented by Steve Crocker in 1969 to help record unofficial notes on the development of ARPANET. RFCs have since become official documents of Internet specifications, communications protocols, procedures, and events. According to Crocker, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Date And Time Representation By Country
Different conventions exist around the world for date and time representation, both written and spoken. Differences Differences can exist in: *The calendar that is used. *The order in which the year, month, and day are represented. (Year-month-day, day-month-year, and month-day-year are the common combinations.) *How weeks are identified (see seven-day week) *Whether written months are identified by name, by number (1–12), or by Roman numeral (I-XII). *Whether the 24-hour clock, 12-hour clock or 6-hour clock is used. *Whether the minutes (or fraction of an hour) after the previous hour or until the following hour is used in spoken language. *The punctuation used to separate elements in all-numeric dates and times. *Which days are considered the weekend. ISO 8601 International standard ISO 8601 (''Representation of dates and times'') defines unambiguous written all-numeric big-endian formats for dates, such as 2021-12-31 for 31 December 2021, and time, such as 23: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Date Code
Date or dates may refer to: *Date (fruit), the fruit of the date palm (''Phoenix dactylifera'') Social activity *Dating, a form of courtship involving social activity, with the aim of assessing a potential partner **Group dating *Play date, an appointment for children to get together for a few hours *Meeting, when two or more people come together Chronology *Calendar date, a day on a calendar ** Old Style and New Style dates, from before and after the change from the Julian calendar to the Gregorian calendar ** ISO 8601, an international standard covering date formats *Date (metadata), a representation term to specify a calendar date **DATE command, a system time command for displaying the current date *Chronological dating, attributing to an object or event a date in the past **Radiometric dating, dating materials such as rocks in which trace radioactive impurities were incorporated when they were formed Arts, entertainment and media Music * Date (band), a Swedish dansb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene Calendar
The Holocene calendar, also known as the Holocene Era or Human Era (HE), is a year numbering system that adds exactly 10,000 years to the currently dominant ( AD/ BC or CE/ BCE) numbering scheme, placing its first year near the beginning of the Holocene geological epoch and the Neolithic Revolution, when humans shifted from a hunter-gatherer lifestyle to agriculture and fixed settlements. The current year by the Gregorian calendar, AD , is HE in the Holocene calendar. The HE scheme was first proposed by Cesare Emiliani in 1993 (11993 HE), though similar proposals to start a new calendar at the same date have been put forward decades earlier. Overview Cesare Emiliani's proposal for a calendar reform sought to solve a number of alleged problems with the current ''Anno Domini'' era, which number the years of the commonly accepted world calendar. These issues include: * The ''Anno Domini'' era is based on the erroneous and / or contentious estimates of the birth year o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Formatting And Storage Bugs
In computer science, time formatting and storage bugs are a class of software bugs that may cause time and date calculation or display to be improperly handled. These are most commonly manifestations of arithmetic overflow, but can also be the result of other issues. The most well-known consequence of bugs of this type is the Y2K problem, but many other milestone dates or times exist that have caused or will cause problems depending on various programming deficiencies. Year 1975 On 4 January 1975, the 12-bit field that had been used for dates in the DECsystem-10 operating systems overflowed. There were numerous problems and crashes related to this bug while an alternative format was developed. Year 1978 The Digital Equipment Corporation OS/8 operating system for the PDP-8 computer used only three bits for the year, representing the years 1970 to 1977. This was recognized when the later COS-310 operating system was developed, and dates were recorded differently. Year 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unix Time
Current Unix time () Unix time is a date and time representation widely used in computing. It measures time by the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970, the beginning of the Unix epoch, less adjustments made due to leap seconds. Unix time originated as the system time of Unix operating systems. It has come to be widely used in other computer operating systems, file systems, programming languages, and databases. Definition Two layers of encoding make up Unix time. The first layer encodes a point in time as a scalar real number which represents the number of seconds that have passed since 00:00:00UTC on Thursday, 1 January 1970. The second layer encodes that number as a sequence of bits or decimal digits. Unix time differs from both Coordinated Universal Time (UTC) and International Atomic Time (TAI) in its handling of leap seconds. UTC includes leap seconds that adjust for the discrepancy between precise time, as measured by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
