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1037Re: ISO 8601 -- 1000

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  • johnmsteele
    Nov 5, 2004
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      --- In ISO8601@yahoogroups.com, Pat Monahan <monahan.p@e...> wrote:
      >
      > Is " 200453 " the correct CCYYWW date stamp for the week that
      includes
      > 20050101 [ 01-Jan-05 ] ?
      > The CCYYWW date stamp for the week that includes 20050103 [ 03-Jan-
      05
      > ] is " 200501"
      >
      > Regards,
      > Pat
      >

      Yes, essentially. The ISO 8601 standard ( see section 5.2.3)
      specifies how to determine week #1, then weeks are numbered
      consequtively until week #1 of the following year. That may require a
      year to have either 52 or 53 weeks. However the "W" separator appears
      compulsory. Therefore proper notation for your examples would be
      2004W53 and 2005W01 or with full precision 2004W53-6 and 2005W01-1
      (The hyphen is optional, however). The fact that the "weekyear" and
      the "calendar year" can be different for a couple of weeks is a
      confusing aspect of ISO.
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