Current date and time expressed according to ISO 8601 [refresh]
Date
2024-04-29
Time in UTC
07:41:08Z T074108Z
Date and time in UTC
2024-04-29T07:41:08Z 20240429T074108Z
Date and time with the offset
2024-04-29T00:41:08−07:00 UTC−07:00 [refresh]
2024-04-29T07:41:08+00:00 UTC+00:00 [refresh]
2024-04-29T14:41:08+07:00 UTC+07:00 [refresh]
Week
2024-W18
Week with weekday
2024-W18‐1
Ordinal date
2024‐120
Time
Major concepts
Past
Present
Future
Eternity
of the world
Fields of study
Archaeology
Chronology
History
Horology
Metrology
Paleontology
Futurology
Philosophy
Presentism
Eternalism
Event
Fatalism
Religion
Mythology
Creation
End time
Day of Judgement
Immortality
Afterlife
Reincarnation
Kalachakra
Measurement
Standards
ISO 8601
Metric
Hexadecimal
Science
Naturalism
Chronobiology
Cosmogony
Evolution
Radiometric dating
Ultimate fate of the universe
Time in physics
Related topics
Motion
Space
Spacetime
Time travel
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ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022.[1] 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.[2] The standard does not assign specific meaning to any element of the dates/times represented: the meaning of any element depends on the context of its use. Dates and times represented cannot use words that do not have a specified numerical meaning within the standard (thus excluding names of years in the Chinese calendar), or that do not use computer characters (excludes images or sounds).[2]
In representations that adhere to the ISO 8601 interchange standard, dates and times are arranged such that the greatest temporal term (typically a year) is placed at the left and each successively lesser term is placed to the right of the previous term. Representations must be written in a combination of Arabic numerals and the specific computer characters (such as "‐", ":", "T", "W", "Z") that are assigned specific meanings within the standard; that is, such commonplace descriptors of dates (or parts of dates) as "January", "Thursday", or "New Year's Day" are not allowed in interchange representations within the standard.
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ISO8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the International...
The ISO week date system is effectively a leap week calendar system that is part of the ISO8601 date and time standard issued by the International Organization...
ISO8601 in 1988. Technical Committee ISO/TC 154, Processes, data elements and documents in commerce, industry and administration. (2004-12-01). "ISO...
standards organizations. ISO 2711 was issued in 1973, and was superseded by ISO8601 in June 1988. "ISO8601:2004(E)". ISO. 2004-12-01. Retrieved 2006-11-15...
since been superseded by ISO8601. This newer standard has set out the formats for local time differentials since 1988, so ISO 4031 is no longer in use...
ISO 2014 is an international standard that was issued in April 1976, and superseded by ISO8601 in June 1988. ISO 2014 was the standard that originally...
ISO 2015 is a standard of the International Organization for Standardization (ISO), superseded by ISO standard ISO8601. The standard ISO week numbering...
time zones, two time zones were removed in 2010 and reinstated in 2014. ISO8601 is a standard established by the International Organization for Standardization...
numbering system (where it coincides with the Julian year 1 BC), and the ISO8601:2004 system, the interchange standard for all calendar numbering systems...
for DMY, "January 11, 2006" for MDY, and "2001 November 6" for YMD. The ISO8601 format YYYY-MM-DD (2024-04-28) is intended to harmonize these formats and...
testimony of simplicity. The International Organization for Standardization ISO8601, which is based in Switzerland, calls Sunday the seventh day of the week...
standard Internet date/time format, a profile of the international standard ISO8601, orders the components of a date like this, and additionally uses leading...
Committee for Standardization (CEN) and (CENELEC) adopted ISO8601 with EN 28601, now EN ISO8601. As a European Norm, CEN and CENELEC member states are...
and times. Which days are considered the weekend. International standard ISO8601 (Representation of dates and times) defines unambiguous written all-numeric...
notation (3:17 pm). International date and time formats typically follow the ISO8601 format (2024-04-11) for all-numeric dates, write the time using the 24-hour...
date-timestamp: Datestamp or DS: A date, for example 2025-05-25 according to ISO8601 Timestamp or TS: A time of day, for example 16:13:43 using 24-hour clock...
Tuesday. According to the International Organization for Standardization's ISO8601 standard, it is the first day of the week. The names of the day of the...
is the day of the week between Wednesday and Friday. According to the ISO8601 international standard, it is the fourth day of the week. In countries...
day–month–year format (31 December 1999, 31/12/99 or 31/12/1999). The ISO8601 format (1999-12-31) is increasingly used for all-numeric dates.[citation...
"CST", but these are not part of the international time and date standard ISO8601 and their use as sole designator for a time zone is discouraged. Such designations...
Geneva-based ISO standards organization uses Monday as the first day of the week in its ISO week date system through the international ISO8601 standard....
Thailand has adopted ISO8601 under national standard: TIS 1111:2535 in 1992. However, in practice, there are some variations. Thailand uses the Thai solar...
referred to as Before the Common Era (BCE). Astronomical year numbering and ISO8601 avoid words or abbreviations related to Christianity, but use the same...
ISO8601 has been adopted as BIS IS 7900:2001 (Data elements and interchange formats – Information interchange – Representation of dates and times - first...
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