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. New Date - A private site about the advantages of using ISO 8601-style dates. W3C Date and Time Formats - Defines a profile of ISO 8601 referenced by the W3C HTML recommendation. 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. 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. Using ISO 8601 Dates - ISO 8601 Dates: What they are and why they're good - University of Illinois at Chicago in the USA. The Best Of Dates, The Worst Of Dates - Just because Y2K is over, doesn't mean programmers are done creating date bugs - covers many date and time issues, especially ISO 8601 - by Gilbert Healton. Date and Time Notation - Macintosh Procedure for ISO 8601 Format - Setting up your Mac to use the Year-Month-Day date format. Instructions are for MAC OS 7, but are easily adapted for later versions. Date and Time Notation - Windows Procedure for ISO 8601 Format - Setting up your PC to use the Year-Month-Day date format. Instructions are for Windows 95, but are easily adapted for later versions. 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. Information on ISO 8601, the date and time representation standard - A short description of and motivation for ISO 8601, the date and time representation standard, with links to more detailed resources - by Jukka Korpela in Finland. Issues about Date and Time - by Clive D.W. Feather. ISO 8601 Date/Time Representations - A simple introduction to ISO 8601 date and time formats - University of Wellington in New Zealand. 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. ISO 8601: the Right Format for Dates - A short description, and guide to usage, of the ISO 8601 format, with some links to further resources. 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 International Date Format - How and why to use international date format in your document - from the W3C QA section. The ISO Date Format - Discussion of formats for expressing dates, with particular reference to the ISO 8601 date format - by Peter Meyer. Calculating the ISO week number - by Jan Stout. - WeekNumber Calculation Explanation. W3C I18N Q&A: Date formats - Discussion of date formats for internationalisation. Date and Time on the Internet - A proposal to use the ISO date format for Internet applications - by Chris Newman. The Many Dates and Times of Perl - A tour of the many date and time handling modules on the CPAN - by Dave Rolsky. Problem F - Standard Dates (50 Points) - A problem set for computer studies students involving programming using the ISO 8601 date format. ISO 8601 Date and Time - Converting and Implementing - How to implement the use of the Year-Month-Day Date format in various computer systems - includes some programming examples and the 'Date Format Poll' - by Nikolai Sandved in Norway. Mac OS X 10.0: How to Set Date and Time to ISO 8601:1988 Standard - Apple support document. Javascript Code - Parsing ISO 8601 Date/Times in JavaScript. 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. Project 2038 FAQ - Description of computer problems with date/time calculations coming in year 2038. 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]. Schema Time Changes (Draft) - Useful information about date and time - by M. Davis. Mac OS X 10.0: How to Set Date and Time to ISO 8601:1988 Standard - Apple support document. Mac OS 9: How to Set Date and Time to ISO 8601:1988 Standard - Apple support document. Fast RFC 3339 date processing in javascript - AJAX routine for faster RFC 3339 date processing. Human Temporal Measurements: Time Measurements and Date Formats - Internation Date Format (ISO 8601) and BCE, CE versus BC and AD. By Vexen Crabtree.