[tz] Hawaii-Aleutian Standard Time

Dave Cantor dave at davecantor.us
Fri Apr 17 17:22:18 UTC 2015

On 17-Apr-2015, Paul Eggert wrote:

> Hank W. wrote:
> > I happened to notice that the U.S. Code of Federal 
> > Title 49, Subtitle A, Part 71, Section 71.12 states "...the
> > Hawaii-Aleutian standard time zone, includes the entire State 
> > Hawaii and, in the State of Alaska, that part of the Aleutian
> > Islands that is west of 169 degrees 30 minutes west 
> >
> > 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 
> but I suppose you're thinking that Hawaii's time zone 
> should change?  If so, that federal regulation no doubt comes 
> 15 U.S. Code §263
> <https://www.law.cornell.edu/uscode/text/15/263>, which 
> the time zone as "Hawaii-Aleutian standard time".  Hawaii had
> already observing this time zone well before this federal name 
> 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 
> time even if the official federal full name for the time zone
> includes an "-Aleutian".

However, also see this official US government web page from the 
U.S. Naval 


Dave C.

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