RE: announce: www-rdf-calendar mailing list

I think it needs not to be locale-dependent, but calendar dependent. For
example there is a calendar of Australian National Holidays that has
relevance in Melbourne. There is also a calendar of local holidays that have
relevance. And there are several different school calendars, and a number of
different religious calendars, and the schedule of practice meetings for the
medieval club I am a member  of, and the calendar of telephone conferences I
need to attend.

The idea is to be able to say which of these are relevant, and then merge
them, to find out when I will have time to go to the beach with my nephews,
or when I need my automatic alarm system to ring me and tell me to do some
work.

cheers

Charles

On Thu, 12 Apr 2001, Danny Ayers wrote:

  I think there's a very good point here - this calendar business has been in
  use for millennia by umpteen religions, based largely on solar and/or lunar
  cycles. This could well be a good starting point - either that or something
  like the Java 2 calendar model. Being able to give in your local religion,
  or rather your locale, and the system being aware of the implications would
  be very useful - for example here in Sri Lanka full moon (Poya) days are
  holidays, much like Sunday in the UK, except more things are shut.

  BTW, Happy New Year!

  (this weekend is Sinhalese & Tamil New Year ;-)


  <- On Thu, 12 Apr 2001, Greg FitzPatrick wrote:
  <-
  <-   *Maundy Thursday
  <-
  <- Which reminds me:
  <-
  <- One of the things Iwanted to be able to do is  work with
  <- different calendars
  <- - e.g. Muslim calendar, Jewish Calendar, comparison of modern Gregorian
  <- Calendar with older variants of such for historical purposes such as
  <- understanding  why the "October Revolution" didn't happen in
  <- what I always
  <- imagine when I think of October 1917, etc.
  <-
  <- One of the best use cases I  came up with was figuring out when Greek
  <- Orthodox churches and Australian Protestant churches celebrate
  <- easter at the
  <- same time.
  <-
  <- Thursday before first Sunday after first full moon after (southern
  <- hemisphere) autumn eqiunox is my belief about how to calculate maundy
  <- thursday for australian protestant churches. I don't actually
  <- know what part
  <- of the rule differs for greek churches, just that sometimes,
  <- like this year,
  <- easter is the same time, and sometimes it is different.
  <-
  <- So the important requirements:
  <-
  <- A way of talking about what calendar is being used, and of
  <- relating that to
  <- at least one other calendar.
  <-
  <- A way of specifying cyclic events (obvious requirement)
  <-
  <- A way of specifying one event as occurring based on the time of
  <- some other
  <- event
  <-
  <- For example:
  <- full moon occurs every 28.(a bit) days, and one of those days in ISO xxxx
  <- time is yyyy
  <-
  <- or
  <- Southern Hemisphere seasonal calendar
  <- Autumn Equinox occurs on northern hemisphere seasonal calendar
  <- spring Equinox
  <-
  <- or
  <- Anglican church of Australia Calendar
  <- Maundy Thursday 2001 occurs on ISO xxxxyyyyzzzz
  <- Good Friday 2001 occurs Greek Orthodox Church calendar Good
  <- Friday 2001 (??)
  <- Palm Sunday 2001 occurs z days after MyCalendar Beltane xyzyx
  <-
  <- cheers
  <-
  <- Chaals
  <-
  <- (PS a lot of calendaring is not religious, but a remarkable amount of it
  <- is...)
  <-
  <- --
  <- Charles McCathieNevile    http://www.w3.org/People/Charles
  <- phone: +61 409 134 136
  <- W3C Web Accessibility Initiative     http://www.w3.org/WAI
  <- fax: +1 617 258 5999
  <- Location: 21 Mitchell street FOOTSCRAY Vic 3011, Australia
  <- (or W3C INRIA, Route des Lucioles, BP 93, 06902 Sophia Antipolis
  <- Cedex, France)
  <-


-- 
Charles McCathieNevile    http://www.w3.org/People/Charles  phone: +61 409 134 136
W3C Web Accessibility Initiative     http://www.w3.org/WAI    fax: +1 617 258 5999
Location: 21 Mitchell street FOOTSCRAY Vic 3011, Australia
(or W3C INRIA, Route des Lucioles, BP 93, 06902 Sophia Antipolis Cedex, France)

Received on Thursday, 12 April 2001 08:44:30 UTC