International Standard Date and Time Notation by Markus Kuhn - An introduction to ISO 8601, the YYYY-MM-DD date and the 24-hour time notation, with notes on week numbers and on implementation.
Implementation of the ISO 8601 Standard A list of countries around the world that have adopted the ISO 8601 standard, also lists equivalent national standards numbers where applicable.
International Date Format Campaign Describes and lists many reasons why the ISO 8601 standard should be more widely adopted in Computing, on the Internet, and in everyday life - by Steve Adams in England.
Discussion About the ISO 8601 Standard About 200 people worldwide, who already use and promote the ISO 8601 Year-Month-Day date format have formed this discussion group. Go here for help and advice, or for general discussion. Message archive can be browsed. If you wish to join in, there are options to participate via the Web-based front-end, or subscribe via email.
Week Numbers In Excel How to calculate absolute week numbers, Excel week numbers and ISO week numbers (with Formula and VBA). Links to other ISO 8601 related materials.
Various Date and Time Format Miscellany by J R Stockton - Covers written date and time formats, ISO Standard 8601 (with links) and converting to and from Roman Numbers. Discusses reforming American format dates as well as JavaScript and non-text formats.
The Mathematics of the ISO 8601 Calendar A comprehensive document covering how week numbers are calculated using the ISO 8601 calendar system. Includes links to many further resources.
The ISO Week Date Calendar A calendar of weeks based on the ISO 8601 week notation - convert any date into week number and day number.
ISO 8601 - The Right Solution The wonderful thing about the computer industry, it is said, "If you like standards, there are a lot to choose from". Provides useful information and background about date format issues.
54 Weeks in 2000 : Another Y2K Problem! A short discussion about week numbering, showing how the ISO 8601 standard had fixed a Y2K problem, long before it was noticed in other non-ISO week-numbering schemes.
Date and Time on the Internet: Timestamps RFC 3339 defines a date and time format for use in Internet protocols that is a profile of the ISO 8601 standard for representation of dates and times using the Gregorian calendar - by Graham Klyne and Chris Newman [FTP].
The Y2K Problem, UIC, and You Describes Year 2000 fixes for computer systems, mainly based on using the ISO 8601 standard for dates.
Date and Time: Week Numbers Windows date and time locale tables sorted both by country order and by definition order - by Peter J Haas in Germany.
Use ISO 8601 and Drop mm/dd/yy and am/pm Justin JIH, a Taiwanese American, sets out the reasons why adopting the YYYY-MM-DD date format is preferred. Includes useful links to further resources.
Standards for Representing Dates Useful overview and discussion on adopting ISO standards and four-digit year formats as part of Y2K readiness and future-proofing of software - University of California at Berkeley.
UN/ECE Trade Facilitation Recommendation 07 The United Nations Economic Commission for Europe - Working Party on Facilitation of International Trade Procedures - Recommendation 07 - Numerical Representation of Dates, Time and Periods of Time.
ISO 8601 A short introduction to the ISO 8601 format.
Date and Time on the Internet - Timestamps Document: draft-ietf-impp-datetime-05 - An updated proposal to use a limited subset of ISO-compliant date formats for date stamps on the Internet - by Chris Newman.
