Issue 16668: time scale1 differs from time scale2 by time offset (date-time-ftf) Source: International Business Machines (Mr. Mark H. Linehan, mlinehan(at)us.ibm.com) Nature: Uncategorized Issue Severity: Summary: concept "time scale1 differs from time scale2 by time offset" in clause 8.5.4 "Time Zones": Issue: This verb concept needs to be reconciled vis-à-vis "calendar1 differs from calendar2 by time offset" in clause 16.5. Issue: 'Time offset' is defined above with reference to calendars but is used here as the difference between time scales. The same concerns were raised under the glossary entry for "calendar1 differs from calendar2 by time offset" in clause 11.5: Issue: 'Calendar has time offset' is not defined anywhere. Issue: Reconcile this verb concept vis-à-vis 'time scale1 differs from time scale2 by time offset' in clause 13.5.2. The following issue came after the glossary entry for "date time coordinate with time offset" in clause 11.5: Rework the definitions given above once we work out the "differ" relationships between calendars or time scales. Resolution: Revised Text: Actions taken: November 16, 2011: received issue Discussion: End of Annotations:===== sposition: ??? OMG Issue No: 16668 Title: open issues re time scale1 differs from time scale2 by time offset Source: Mark Linehan . IBM . mlinehan@us.ibm.com Summary: The final submission document recorded the following issues against the verb concept "time scale1 differs from time scale2 by time offset" in clause 8.5.4 "Time Zones": Issue: This verb concept needs to be reconciled vis-àis "calendar1 differs from calendar2 by time offset" in clause 16.5. Issue: 'Time offset' is defined above with reference to calendars but is used here as the difference between time scales. The same concerns were raised under the glossary entry for "calendar1 differs from calendar2 by time offset" in clause 11.5: Issue: 'Calendar has time offset' is not defined anywhere. Issue: Reconcile this verb concept vis-àis 'time scale1 differs from time scale2 by time offset' in clause 13.5.2. The following issue came after the glossary entry for "date time coordinate with time offset" in clause 11.5: Rework the definitions given above once we work out the "differ" relationships between calendars or time scales. Resolution: Revised Text: Disposition: ??? To: date-time-ftf@omg.org Subject: Date-Time Issue 16668 - open issues re time scale1 differs from time scale2 by time offset X-KeepSent: CD4ECAC6:2E506072-85257A57:006772A8; type=4; name=$KeepSent X-Mailer: Lotus Notes Release 8.5.3 September 15, 2011 From: Mark H Linehan Date: Sat, 11 Aug 2012 14:51:22 -0400 X-MIMETrack: Serialize by Router on D01MC604/01/M/IBM(Release 8.5.3 ZX853HP5|January 12, 2012) at 08/11/2012 14:51:22 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12081118-5930-0000-0000-00000AC38578 Here's a proposed resolution: -------------------------------- Mark H. Linehan STSM, IBM Research Date-Time Issue 16668 - time scale1 differs from time scale2 by time offset1.doc Disposition: Resolved OMG Issue No: 16668 Title: open issues re time scale1 differs from time scale2 by time offset Source: Mark Linehan . IBM . mlinehan@us.ibm.com Summary: The final submission document recorded the following issues against the verb concept "time scale1 differs from time scale2 by time offset" in clause 8.5.4 "Time Zones": Issue: This verb concept needs to be reconciled vis-àis "calendar1 differs from calendar2 by time offset" in clause 16.5. Issue: 'Time offset' is defined above with reference to calendars but is used here as the difference between time scales. The same concerns were raised under the glossary entry for "calendar1 differs from calendar2 by time offset" in clause 11.5: Issue: 'Calendar has time offset' is not defined anywhere. Issue: Reconcile this verb concept vis-àis 'time scale1 differs from time scale2 by time offset' in clause 13.5.2. The following issue came after the glossary entry for "date time coordinate with time offset" in clause 11.5: Rework the definitions given above once we work out the "differ" relationships between calendars or time scales. Resolution: Combine the .time scale1 differs from time scale2 by time offset. and the .calendar1 differs from calendar2 by time offset. verb concepts. No change to .date time coordinate with time offset. is required. Combine beta-2 clause 10.4 .Time Zones and Daylight Savings Time. with clause 10.3 .Time Zones. since they address the same subject. Revised Text: These updates are based on the beta-2 specification document. They combine clauses 10.3 and 10.4 and combine the glossary entries for .time scale1 differs from time scale2 by time offset. and .calendar1 differs from calendar2 by time offset.. Replace the first line of clause 10.3, which reads: This sub clause provides the infrastructure for time zones. . with the entire introductory text of clause 10.4 (6 paragraphs). Move figure 10.5 from clause 10.4 to clause 10.3, immediately before the (new) entry for .calendar1 differs from calendar2 by time offset., and renumber it as 10.4. (Note: existing figure 10.4 becomes figure 10.5, below . the two figures just swap numbers.) In clause 10.3, replace the following glossary entry: time scale1 differs from time scale2 by time offset Synonymous Form: time scale1 . time scale2 = time offset Synonymous Form: time scale1 = time scale2 time offset Definition: The time offset is the duration between a time point on time scale1 and a time point on time scale2. Necessity: The time points are identified by the same time coordinate. Necessity: The time scales have the same granularity. Example: Pacific Standard Time differs from Eastern Standard Time by .3 hours. PST . EST = .3 hours. Note the minus sign on the right hand side is styled as a keyword. This means that a clock reading in EST occurs before the same clock reading in PST. Other way around, use +. See time offset. Example: PST = EST . 3 hours. This form is commonly used to define time zones, where time scale2 is UTC: IST = UTC+5½ hours. Sometimes hours is implied and the .hours. symbol is omitted in time zone designations. . with: calendar1 differs from calendar2 by time offset Synonymous Form: time offset = calendar2 . calendar1 Synonymous Form: calendar1 = calendar2 - time offset Synonymous Form: calendar2 = calendar1 + time offset Definition: each time scale1 of calendar1 is a time scale2 of calendar2 and each time scale2 of calendar2 is a time scale1 of calendar1 and the first member of each time scale1 of calendar1 corresponds to a time interval1 and the first member of the time scale1 of calendar2 corresponds to a time interval2 and time interval2 is time offset after time interval1 Description: The two calendars have the same time scales, and the time scales correspond to time intervals that are time offset apart. Example: Eastern Standard Time (EST) is UTC - 5 hours, and Pacific Standard Time (PST) is UTC - 8 hours. Therefore, EST differs from PST by +3 hours, and PST differs from EST by .3 hours. Note the minus sign on the right hand side is styled as a keyword. This means that a clock reading in EST occurs before the same clock reading in PST. For the other way around, use .+.. Example: India Standard Time (IST) is UTC + 5 hours 30 minutes. Therefore IST differs from PST by 13 hours 30 minutes. Renumber figure 10.4 as 10.5. Move this figure and the 3 glossary entries after it (up to beta-2 figure 10.5) to the end of clause 10.3. Delete the clause 10.4 glossary entry for .calendar1 differs from calendar2 by time offset.. Delete the 10.4 heading, since there is no remaining text in clause 10.4. Renumber the remaining sub-clauses of clause 10. Disposition: Resolved