ISSUE-174: Gregorian and Julian calendars (Section 7 DateTime Description)

Gregorian and Julian calendars (Section 7 DateTime Description)

State:

CLOSED

Product:

Time ontology in OWL

Raised by:

Simon Cox

Opened on:

2017-04-12

Description:

From https://www.w3.org/XML/2007/qts-timeont-comments#id64494

Consider

:meetingStartDescription
a :DateTimeDescription ;
:unitType :unitMinute ;
:minute 30 ;
:hour 10 ;
:day 1 ;
:dayOfWeek :Saturday ;
:dayOfYear 1 ;
:week 1 ;
:month 1 ;
:timeZone tz-us:EST ;
:year 2006 .

This is the same as the example in section "DateTime Description" except that the day of the week changed from Sunday to Saturday.

Does it describe an instant in time? Is there a typo in the dayOfWeek field? According to the calendar, 1 January 2006 was a Sunday, not a Saturday. Or does the description denote Saturday, 1 January 2006 in the Julian (Old Style) calendar, which is Saturday 14 January 2006 in the Gregorian calendar?

Consider

:meetingStartDescription
a :DateTimeDescription ;
:unitType :unitMinute ;
:minute 30 ;
:hour 10 ;
:day 1 ;
:dayOfWeek :Friday ;
:dayOfYear 1 ;
:week 1 ;
:month 1 ;
:timeZone tz-us:EST ;
:year 2106 .

This is the same as the example in section "DateTime Description" except that the year has been changed from 2006 to 2106 and the day of the week changed from Sunday to Friday.

What period of time is denoted by this description? The description seems to make sense in more than one way. Friday 1 January 2106 is a day in the Gregorian calendar; it is also a day in the Julian (or Old Style) calendar.

Related Actions Items:

No related actions

Related emails:

1. OWL-Time - ISSUE-173: Week numbering (Section 7) (from Simon.Cox@csiro.au on 2017-04-12)
2. OWL-Time - ISSUE-174: Gregorian and Julian calendars (Section 7 DateTime Description) (from Simon.Cox@csiro.au on 2017-04-12)

Related notes:

Display change log