ISO 8601

This wiki and tango.info in general uses the international date format (w:ISO 8601). This eliminates ambiguities, makes searching the site and sorting events easier. A standard date format looks like: 2006-05-01

Examples for non standard local formats:

• 01/05/06 (does it mean 2001-05-06 or 2006-01-05 or 2006-05-01?)
• 1.5.06
• 1/5/2006
• 5/1/2006
• 1.5.2006

Time intervals are represented by start point and end point, seperated by "--":

Examples for standard representation of time intervals

• 2007-06-25--26 -> start: 2007-06-25 end 2007-06-26 (two days)
• 2007-06-25--29 -> start: 2007-06-25 end: 2007-06-29 (five days)
• 2007-06-25--07-01 -> start: 2007-06-25 end: 2007-07-01 (seven days)
• 2007-12-30--2008-01-02 -> start: 2007-12-30 end: 2008-01-02 (four days)

The ISO standard recomends "/" but allows "--" as a seperator. "--" can be used in filenames, so tango.info prefers this.

Time

Time is always written like 14:30. Time ranges should be represented like 14:30--16:00.

links

• http://www.cl.cam.ac.uk/~mgk25/iso-time.html
• http://www.cs.tut.fi/~jkorpela/iso8601.html
• http://www.w3.org/TR/NOTE-datetime