NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Standard time in U.S. now based on UTC
From: Paul Hirose
Date: 2007 Aug 16, 15:06 -0700
From: Paul Hirose
Date: 2007 Aug 16, 15:06 -0700
On August 9 the President signed a piece of legislation which, among other things, defined the U.S. zone times relative to UTC instead of mean solar time as before. http://www.govtrack.us/congress/billtext.xpd?bill=h110-2272 (search for STANDARD TIME -- it's about 1/4 of the way down the document) The former standard time law: http://www.law.cornell.edu/uscode/html/uscode15/usc_sec_15_00000261----000-.html I learned of this via a posting on the comp.risks newsgroup: http://groups.google.com/group/comp.risks/browse_thread/thread/50a0781c6f25ce94/45716890c1479ac5?lnk=st&q=&rnum=1#45716890c1479ac5 In practical terms I don't expect any effect, at least right away. I have read that in the U.S., as in many other countries, UTC has long been the de facto basis of civil time. But now the law requires (implicitly) that leap seconds be included in standard time. E.g. 15:59:60.5 PST would be the legally correct time midway through a leap second. This may affect certain time-critical financial transactions. For example, eBay may have to specify exactly how their time scale behaves when there's a leap second. -- I block messages that contain attachments or HTML. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---