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Re: [sdw] RIF rules for OWL-Time (#1236)

From: Chris Little via GitHub <sysbot+gh@w3.org>
Date: Wed, 06 Jan 2021 11:38:52 +0000
To: public-sdwig@w3.org
Message-ID: <issue_comment.created-755250712-1609933131-sysbot+gh@w3.org>
I am slightly nervous of this RIF work. I read that the ['built in' entities](http://www.w3.org/TR/2013/REC-rif-dtb-20130205/) in both basic formats allow arithmetic (addition, subtraction, division and multiplication) on dateTime, date and time components. This is not watertight, Even if calendars are restricted to Gregorian, it is dubious whether leap-seconds, or even leap-days, have been correctly implemented.

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