Re: [Boost-users] Support for extended Daylight Saving Time in 2007
Date: Mon, 8 Jan 2007 21:25:24 -0500 From: "Eric Yankowitz" <nnews@swiftdesign.com> Subject: [Boost-users] Support for extended Daylight Saving Time in 2007
Been trying to find information describing boost's level of support for the four week Daylight Saving Time extension in the US that will occur this March. (http://geography.about.com/cs/daylightsavings/a/dst.htm), I haven't been able to find very much. A lot of software is having issues and was wondering if Boost was ready for the event?
Was able to find these links, which suggested issues:
http://sourceforge.net/tracker/index.php?func=detail&aid=14717 23&group_id=7586&atid=207586
http://sourceforge.net/tracker/index.php?func=detail&aid=14786 19&group_id=7586&atid=207586
Any idea if these are being resolved? And if any others exist?
Eric, I'm a new user of this code, so take everything I say with the appropriate amount of caution, but I have looked into this question a little. My conclusion is that the date_time library is still shipping with the old timezone rules at the moment. It's easy to change the date_time_zonespec.csv file to use the new rules instead (you can do that yourself, and I assume that the official version will do it soon too). However, at the moment the code doesn't seem to support different timezone rules for different years, so once you've changed it, you're out of luck if you want to look up times in 2006. See my previous post about this subject at http://article.gmane.org/gmane.comp.lib.boost.user/23837 Hope that helps, -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)
Stephen Turner wrote:
Date: Mon, 8 Jan 2007 21:25:24 -0500 From: "Eric Yankowitz" <nnews@swiftdesign.com> Subject: [Boost-users] Support for extended Daylight Saving Time in 2007
Been trying to find information describing boost's level of support for the four week Daylight Saving Time extension in the US that will occur this March. (http://geography.about.com/cs/daylightsavings/a/dst.htm), I haven't been able to find very much. A lot of software is having issues and was wondering if Boost was ready for the event?
Was able to find these links, which suggested issues:
http://sourceforge.net/tracker/index.php?func=detail&aid=14717 23&group_id=7586&atid=207586
http://sourceforge.net/tracker/index.php?func=detail&aid=14786 19&group_id=7586&atid=207586
Any idea if these are being resolved? And if any others exist?
Sorry for the extended delay on responses....off the net on vacation for an extended period. Short answer is that no, they haven't been resolved yet.
Eric,
I'm a new user of this code, so take everything I say with the appropriate amount of caution, but I have looked into this question a little.
My conclusion is that the date_time library is still shipping with the old timezone rules at the moment. It's easy to change the date_time_zonespec.csv file to use the new rules instead (you can do that yourself, and I assume that the official version will do it soon too).
Yep, in fact I was looking for someone that has time to look at this carefully to do this update and send me a patch -- someone about a month ago said they would do this, but haven't seen anything yet. As for when it will be released, I may have to ask the release manager to permit an update. I wasn't expecting 1.34 release to drag into 2007.
However, at the moment the code doesn't seem to support different timezone rules for different years, so once you've changed it, you're out of luck if you want to look up times in 2006. See my previous post about this subject at http://article.gmane.org/gmane.comp.lib.boost.user/23837
This is true -- does your application require historic dates with timezone lookups or only current dates? Jeff
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Stephen Turner