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.

• RFC 822 "Standard for the Format of Arpa Internet Text Messages"
  • published 1982-08-13
  • e.g. used for email
  • format: [day ,] 20 Jun 82 14:01:17
• RFC 2445 "Internet Calendaring and Scheduling Core Object Specification"
  • format: 19960401T235959Z
• RFC 3339 "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 notation by country