Issue 17429: Definition of Calendar Date (date-time-ftf) Source: International Business Machines (Mr. Mark H. Linehan, mlinehan(at)us.ibm.com) Nature: Uncategorized Issue Severity: Summary: The definition of ‘calendar date’ is wrong. It reads ‘Gregorian year month date coordinate or Gregorian day of year coordinate or year weekday coordinate’. A calendar date should indicate a specific time interval, but a Gregorian day of year coordinate does not. It appears that the definition confuses ‘Gregorian day of year coordinate’ with ‘Gregorian year day coordinate’. Recommendation: change the definition to mention ‘Gregorian year day coordinate’ rather than ‘Gregorian day of year coordinate’. Clarify the intent of ‘calendar date’ by adding “General Concept: absolute time coordinate”, and by adding a Description such as “A calendar date indicates a specific time interval of duration ‘day’.” Resolution: Revised Text: Actions taken: June 15, 2012: received issue Discussion: End of Annotations:===== sposition: ??? OMG Issue No: 17429 Title: Definition of Calendar Date Source: Mark H. Linehan, IBM, mlinehan@us.ibm.com Summary: The definition of .calendar date. is wrong. It reads .Gregorian year month date coordinate or Gregorian day of year coordinate or year weekday coordinate.. A calendar date should indicate a specific time interval, but a Gregorian day of year coordinate does not. It appears that the definition confuses .Gregorian day of year coordinate. with .Gregorian year day coordinate.. Recommendation: change the definition to mention .Gregorian year day coordinate. rather than .Gregorian day of year coordinate.. Clarify the intent of .calendar date. by adding .General Concept: absolute time coordinate., and by adding a Description such as .A calendar date indicates a specific time interval of duration .day... Resolution: Revised Text: Disposition: ??? Date: Mon, 2 Jul 2012 19:53:19 -0400 From: Ed Barkmeyer Reply-To: Organization: NIST User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) To: OMG DateTimeVoc FTF Subject: Issue 17425 and 17429 calendar date X-NISTMEL-MailScanner-Information: Please contact postmaster@mel.nist.gov for more information X-NISTMEL-MailScanner-ID: q62NrOe9013493 X-NISTMEL-MailScanner: Found to be clean X-NISTMEL-MailScanner-SpamCheck: X-NISTMEL-MailScanner-From: edbark@nist.gov X-NISTMEL-MailScanner-Watermark: 1341878005.85376@wSAzq0eKlTZWo0x/fbVS8A X-Spam-Status: No I attach a draft resolution, reflecting discussions on June 25 and July 2. This is a rewrite of 12.3.4 in anticipation of its being moved bodily into the new Calendars section. There are two comments in this writeup. One is a synchronization issue. The other is an ugly solution to a problem in expressing the definition of date time. There is also a missing comment: It seems we need absolute time scales of hours, minutes and seconds for date time coordinates to have a time point to indicate. -Ed -- Edward J. Barkmeyer Email: edbark@nist.gov National Institute of Standards & Technology Manufacturing Systems Integration Division 100 Bureau Drive, Stop 8263 Tel: +1 301-975-3528 Gaithersburg, MD 20899-8263 Cel: +1 240-672-5800 Issue 17429-definition of calendar date1.docx Issue 17425-calendar-date1.docx