LISTSERV mailing list manager LISTSERV 16.0

Help for DATETIME Archives


DATETIME Archives

DATETIME Archives


DATETIME@C4VLPLISTSERV01.LOC.GOV


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Proportional Font

LISTSERV Archives

LISTSERV Archives

DATETIME Home

DATETIME Home

DATETIME  August 2011

DATETIME August 2011

Subject:

Re: Calendar

From:

"Edward C. Zimmermann" <[log in to unmask]>

Reply-To:

Discussion of the Developing Date/Time Standards <[log in to unmask]>

Date:

Thu, 11 Aug 2011 20:47:15 +0200

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (55 lines)

Thinking about calendars.. and in particular the Hebrew...
we have the problem of "when does the day start"... the reference in the 
Jewish calendar is typically the time in Jerusalem. The problem, however, is 
not just Jerusalem instead of "Greenwich" but also the dynamics of the hour 
to which a day begins. In UTC the day begins with the "stroke of midnight".. 
a time that is always "the same": 00:00 or 23:60. A UTC day has a fixed 
length of exactly 24 hours. A day in the Hebrew calendar has neither fixed 
length nor fixed start or end. Within the day there are, however, two 
different measures of time in use depending upon their application.
A grammar allowing for the conversion of dates and times between 
the "Universal" and "Hebrew", in this light, is hardly trivial. Even worse.. 
Two communities in the same town can have two different accepted times for 
the start and end of the day.. and in places such as Scandanavia when during 
the Summer the Sun, if at all, hardly sets.. and in Winter hardly rises.. 
pre-set times are used.. Ilan Ramon celebrated Sabbath on the Space 
Shuttle.. which was an interesting challage since a day/night cycle was a 
whopping 90 min.. and to what time? To that of the place of his departure.. 
Cape Canaveral.. according to the customs followed by the local community 
there..
In other words.. while a calendar option might be nice.. I think its a "very 
sticky wicket"..  


On Wed, 10 Aug 2011 17:37:39 +0200, [UTF-8?]SaaÅ¡ha Metsärantala wrote
> Hello!
> 
> I would like to make a new suggestion about the calendar issue.
> 
> > "'gregorian' is the only value defined."
> This raises the question whether:
> 
> -0001
> 
> (implying "astronomical" numbering) is to be considered the same as
> 
> -0002^gregorian
> 
> or if negative years can not and never be assigned a calender (as of 
> today's EDTF specification).
> 
> I suggest to move the whole concept of "calendar" to EDTF phase two and in 
> today's EDTF phase one, refer to ISO_8601 and only state that the 
> "astronomical numbering" is default.
> 
> Regards!
> 
> [UTF-8?]Saašha,


--

Edward C. Zimmermann, NONMONOTONIC LAB
http://www.nonmonotonic.net
Umsatz-St-ID: DE130492967

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

August 2019
February 2019
December 2018
November 2018
October 2018
January 2018
August 2017
July 2017
June 2017
April 2017
March 2017
February 2017
August 2016
July 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
August 2015
July 2015
June 2015
May 2015
April 2015
March 2015
December 2014
November 2014
March 2014
September 2013
May 2013
February 2013
October 2012
September 2012
August 2012
May 2012
March 2012
December 2011
November 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
February 2010
January 2010
December 2009
November 2009

ATOM RSS1 RSS2



LISTSERV.LOC.GOV

CataList Email List Search Powered by the LISTSERV Email List Manager