was "[tz] zone.tab comments Canada - places -> locations [OT - English]" I return to on topic. On Fri, May 11, 2012 at 5:41 AM, Brian Inglis <Brian.Inglis@systematicsw.ab.ca> wrote: ....

...

C) I mean and meant location as in zone.tab "Central Standard Time - Saskatchewan - most locations"

D) I mean and meant location as in Theory file: ... Use of location in Theory refers to a specific place to be used as the time zone name. Not true.

tzcode2012b\Theory: ----- Names of time zone rule files ----- Names normally have the form AREA/LOCATION, where AREA is the name of a continent or ocean, and LOCATION is the name of a specific location within that region. ---------------------------------------- I.e. the /name of a specific location/ is to be used as one /part/ of the time zone name.

Use of places in zone.tab comments refers to the general locales where the same time zone is observed around the specific location used for the time zone name; And the use of "locations" in zone.tab is the same.

Following are some quotes from RFC 5545 http://tools.ietf.org/html/rfc5545 Internet Calendaring and Scheduling Core Object Specification http://tools.ietf.org/html/rfc5545#page-28 Failure to include and follow VTIMEZONE definitions in iCalendar objects may lead to inconsistent understanding of the local time at any given location. http://tools.ietf.org/html/rfc5545#page-64 Many locations adjust their Standard Time forward or backward by one hour, in order to accommodate seasonal changes in number of daylight hours, often referred to as Daylight Saving Time. Some locations adjust their time by a fraction of an hour. ... This database contains current and historical time zone information for a wide variety of locations around the globe http://tools.ietf.org/html/rfc5545#section-3.8.1.7 Property Name: LOCATION Purpose: This property defines the intended venue for the activity defined by a calendar component. The IETF GEOPRIV site https://datatracker.ietf.org/wg/geopriv/ https://datatracker.ietf.org/wg/geopriv/charter/ uses "location" and not "place". Some related ISO standards: a) ISO 19112:2003 Geographic information -- Spatial referencing by geographic identifiers 4.4 location identifiable geographic place found via http://www.iso.org/obp/ui/ b) http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?... ISO 6709:2008 Standard representation of geographic point location by coordinates c) http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnum... ISO 19133:2005 Geographic information -- Location-based services -- Tracking and navigation Annex: Background information for when the inconsistencies first occurred in the tzdb: tzdata1996l/zone.tab did only have "most locations" and no "most places" America/Halifax Atlantic Time - Nova Scotia (most locations), New Brunswick, Labrador & PEI But did have America/Glace_Bay Atlantic Time - Nova Scotia - places that did not observe DST 1966-1971 America/Nipigon Eastern Time - Ontario & Quebec - places that did not observe DST 1967-1973 tzdata1998a/zone.tab maybe earlier, contains "most places" once: America/Halifax Atlantic Time - Nova Scotia (most places), NB, W Labrador, E Quebec & PEI And twelve times "most locations". -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/