[tz] Hawaii-Aleutian Standard Time

Matt Johnson mj1856 at hotmail.com
Fri Apr 17 16:08:50 UTC 2015

It's also worth mentioning that despite sharing the same standard time zone offset of UTC-10, the Aleutian Islands switch to UTC-9 for daylight saving time and Hawaii does not.
Also, it's quite reasonable that people in Hawaii would not associate themselves with the Aleutian Islands, as they are separated by more than 2,300 Miles. 

> Date: Fri, 17 Apr 2015 08:48:09 -0700
> From: eggert at cs.ucla.edu
> To: hankw1 at austin.rr.com; tz at iana.org
> Subject: Re: [tz] Hawaii-Aleutian Standard Time
> Hank W. wrote:
> > I happened to notice that the U.S. Code of Federal Regulations, Title 49,
> > Subtitle A, Part 71, Section 71.12 states "...the Hawaii-Aleutian standard
> > time zone, includes the entire State of Hawaii and, in the State of Alaska,
> > that part of the Aleutian Islands that is west of 169 degrees 30 minutes
> > west longitude."
> >
> > The America/Adak Zone data include this change, but the Pacific/Honolulu
> > Zone data do not.
> Sorry, I don't understand what the phrase "this change" refers to, but I suppose 
> you're thinking that Hawaii's time zone abbreviation should change?  If so, that 
> federal regulation no doubt comes from 15 U.S. Code §263 
> <https://www.law.cornell.edu/uscode/text/15/263>, which designates the time zone 
> as "Hawaii-Aleutian standard time".  Hawaii had already observing this time zone 
> well before this federal name was introduced in 1983, and popular usage still 
> seems to prefer "Hawaii Standard Time" and/or "HST" to designate it, even in 
> government web sites.  For example, see:
> http://help.waterdata.usgs.gov/code/tz_query
> https://www.fema.gov/disaster/1664/news
> http://oimt.hawaii.gov/procurement/
> http://labor.hawaii.gov/ui/faq/
> We prefer popular to "official" English-language usage, when it can be 
> determined, so "HST" seems to be the way to go for Hawaii's time even if the 
> official federal full name for the time zone includes an "-Aleutian".
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