<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Oh sorry. I meant Universal Time (UT or UTC). In the documentation it always says GMT but my understanding is that UTC has replaced GMT. In any case, what I'm talking about is in the Olson format, following the ttinfo there are <span style="background-color: rgba(255, 255, 255, 0);">ttisstdcnt</span><i style="background-color: rgba(255, 255, 255, 0);"> </i><span style="background-color: rgba(255, 255, 255, 0);">bo</span><span style="background-color: rgba(255, 255, 255, 0);">olean values and </span><span style="background-color: rgba(255, 255, 255, 0);">ttisgmtcnt</span><span style="background-color: rgba(255, 255, 255, 0);"> boolean values.</span></div><div><br></div><div><span style="background-color: rgba(255, 255, 255, 0);">I'm trying to determine if I need to care about these values and if so, then how. There is some evidence [1] that I can safely ignore them, and the man page for the file format seems to indicate that they are used for some kind of POSIX handling that I won't be doing. But the C code appears to do something with them and I've seen one other library that at least recorded the information. </span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">Hopefully this is a bit more clear, sorry for the confusion. </span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">[1] </span><a href="http://stackoverflow.com/questions/6317388/timezone-database-file-format-question">http://stackoverflow.com/questions/6317388/timezone-database-file-format-question</a></div><div><br><div>Sent from my iPhone</div></div><div><br>On Sep 27, 2015, at 6:48 AM, Paul Eggert <<a href="mailto:eggert@cs.ucla.edu">eggert@cs.ucla.edu</a>> wrote:<br><br></div><blockquote type="cite"><div><span>Jason Johnson wrote:</span><br><blockquote type="cite"><span>I'm writing some software that deals with dates and I parse Olson files to</span><br></blockquote><blockquote type="cite"><span>get time zone information. In the tzfile man page, both entries say that</span><br></blockquote><blockquote type="cite"><span>they are used for handling POSIX-style environmental variables?</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Does that mean that I can ignore those values and assume the transition</span><br></blockquote><blockquote type="cite"><span>times are just UAT?</span><br></blockquote><span></span><br><span>Sorry, I don't understand your question. For starters, I don't know what "UAT" is. Perhaps you could clarify by giving a specific example.</span><br></div></blockquote></body></html>