On 17-Apr-2015, Paul Eggert wrote:
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 ยง263 <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".
However, also see this official US government web page from the U.S. Naval Observatory: http://tycho.usno.navy.mil/cgi-bin/timer.pl Dave C.