Wikidata:Property proposal/located in IANA time zone

located in IANA time zone

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   Under discussion

Data type	Item
Example 1	Cairo (Q85) : Africa/Cairo (Q4689484)
Example 2	Indianapolis (Q6346) : America/Indiana/Indianapolis (Q4742656)
Example 3	San Francisco (Q62) : America/Los_Angeles (Q4742667)

Motivation

An IANA time zone is a time zone that contains only places for which the offset from UTC was the same since 1970. If a change in offset from UTC for such a zone exists it can be recorded in the IANA time zone item.

If IANA is correct all claims about UTC offsets that currently exist on items, including differences between summer and winter for some regions, and relate to data after 1970 can be stored in the IANA zone item and be removed from individual items.

When the EU abandons daylight saving time, the change can be added to Wikidata by editing only ~30 IANA zones (for EU countries) instead of thousands or millions of individual items.

Much less unsourced original research if UTC offsets are stored on time zone items instead of place items.  – The preceding unsigned comment was added by GeoGQL (talk • contribs) at 21:28, 5 May 2023 (UTC).

Discussion

•  Support, an important property for time.--Arbnos (talk) 19:49, 11 January 2024 (UTC)
•  Comment The examples for individual cities, time zones should only be added to countries or large regions, pushed to the most generic level, to avoid vast duplication of information. Vicarage (talk) 16:00, 6 February 2024 (UTC)

  @GeoGQL:, could you please clarify the comments above by @Vicarage:. Regards, ZI Jony ^(Talk) 07:41, 7 March 2024 (UTC)

  @GeoGQL:, could you please clarify the comments above, otherwise will be marked as not done! Regards, ZI Jony ^(Talk) 06:23, 8 April 2024 (UTC)