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Bug Tracker

ID95
StatusClosed (Fixed)
Categorydatetime2
Version1.0
SummaryDTMsaveaszulutime calculates the wrong UTC time

Report

The DTMsaveaszulutime command appears to calculate the UTC time incorrectly. The example in the manual illustrates this: Original date: 2014-05-01 03:55:00-06:00. UTC+00:00: 2014-04-30 21:55:00Z. The original date is in the timezone UTC-6, so the corresponding UTC time should be 09:55:00, not 21:55 the previous day. If I save and print the current time using: \DTMsavenow{creationDate} \DTMtozulu{creationDate}{creationDateUTC} \DTMuse{creationDateUTC} I am given a UTC time of 18:20. My local time is 17:20 BST (= UTC+1), so the corresponding UTC time should be 16:20, not 18:20. (The minimal working example will only show the improper behaviour if the computer's timezone is not set to UTC.) As far as I can tell, this can be fixed by changing the line
\edef\@dtm@TZhour{\number#8}%
to
\edef\@dtm@TZhour{-\number#8}%
in the package's source code.

ar

MWE

\documentclass{article}
\usepackage[calc]{datetime2}

\begin{document}

\DTMsavenow{creationDate}
\DTMtozulu{creationDate}{creationDateUTC}

Current time: \DTMuse{creationDate}

UTC time: \DTMuse{creationDateUTC}


\end{document}

Evaluation

Fixed in v1.1 2015-09-15.

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