iso-8601 [iso-8601] namespace descriptor quick reference guide

ISO 8601 is the International Standard for date and time formats. Terms in the namespace abbreviation iso-8601: are a collection of ISO 8601 terms and are intended for use with literal objects.

iso-8601:calendarDate
EUPH identifier
[UID:0.0.DATEA317]
Definition
particular calendar day [...] represented by its calendar year [...], its calendar month [...] and its calendar day of month [...]
Notes

Recommended best practice is to provide the date in the extended format, as proposed by ISO 8601 ([YYYY]["-"][MM]["-"][DD]), where [YYYY] is a format representation of a calendar year, [MM] is a format representation of a calendar month and [DD] is a format representation of a calendar day.

Examples
  • 2025-03-13
Dependencies
Modified
2025-03-13 10:40:28
iso-8601:calendarDateAndTime
EUPH identifier
[UID:0.0.DTNDT319]
Definition
date and time representation [...] that includes all the time scale components [...] associated with the expression [...]
Notes

Recommended best practice is to provide the complete representation of date and time in the extended format, as proposed by ISO 8601 ([YYYY]["-"][MM]["-"][DD] [hh][":"][mm][":"][ss]), where [YYYY] is a format representation of a calendar year, [MM] is a format representation of a calendar month, [DD] is a format representation of a calendar day, [hh] is a format representation of a clock hour, [mm] is a format representation of a clock minute, and [ss] is a format representation of a clock second.

Examples
  • 2025-03-13 10:34:12
Dependencies
Modified
2025-03-13 10:40:26
iso-8601:calendarMonth
EUPH identifier
[UID:0.0.CLNDR376]
Definition
time scale unit [...] resulting from a defined division of a calendar year [...], each containing a specific number of calendar days [...] Note 1 to entry: A calendar month is in common parlance often referred to as month, however in this document calendar month and month have different definitions.
Dependencies
Modified
2025-02-06 12:32:43
iso-8601:calendarWeekOfYear
EUPH identifier
[UID:0.0.CLNDR514]
Definition
ordinal number of a calendar week [...] within a calendar year [...] of the week calendar [...]
Dependencies
Modified
2025-02-06 12:32:32
iso-8601:clock hour
EUPH identifier
[UID:0.0.HRFDY386]
Class
Definition
time scale unit [...] whose duration [...] is one hour [...] Clock hour is in common parlance often referred to as hour, however in this document clock hour and hour have different definitions.
Dependencies
Modified
2025-02-06 12:32:39
iso-8601:localTimeOfDay
EUPH identifier
[UID:0.0.TMFDY464]
Definition
time of day [...] in a local time scale [...]
Dependencies
Modified
2025-02-06 12:32:36