## Re: [ISO8601] Day Number in the Aristean Calendar

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• The only thing I never liked about this was the time of day: Its main unit is a decimal multiple, but what kind of multiple is the question. Not a straight
Message 1 of 7 , Oct 14, 2005
unit is a decimal multiple, but what kind of multiple is the question.
Not a straight 10/100/100 (well, really 9/99/99) system. Otherwise, it
works very nicely. It would be possible to memorise and know in
advance what weekday every date falls on every year. :-)

On 14/10/05, Aristeo Canlas Fernando <calendaracf@...> wrote:
> My Dear Fellowmen,
>
> The Aristean Calendar is a perpetual calendar. The day of the week
> and the date are the same year after year. For example, presently,
> if your birthday falls on Monday, next year, it would fall on
> Tuesday, etc.
>
> In the Aristean calendar, your birthday will fall on the same day of
> the week always. Hence, if your birthday is on October 15, every
> year, your birthday will fall on Monday.
>
> What is the day number of October 15? It is the 288th day of the
> year. The day before is Sunday, the 277th day, October 14. It is a
> red-letter day because it is Sunday and the end of the week, week 41.
>
> The table of Day Number is found at
> number is known and you would like to determine the day of the week,
> the way of finding it is found at
>
> Your questions will be appreciated.
>
> Best regards,
> Aristeo Canlas Fernando, Peace Crusader
> Motto: pro aris et focis
• Dear Ivy and my Fellowmen, You are looking for a straight 10/100/100 decimal format for a day. The Aristean Decimal Time is 100/10/100. It is still in
Message 2 of 7 , Oct 14, 2005
Dear Ivy and my Fellowmen,

You are looking for a "straight 10/100/100" decimal format for a
day. The Aristean Decimal Time is 100/10/100. It is still in
decimal though. And dividing the day into 100 units may be better
than just 10. Each of the 100 units may just be about equal to the
present 15 minutes. And this is how we tell the time -- quarter
past the hour, half hour, quarter to the hour. An hour seems to be
a long time compared to a quarter of it.

It is hard to make the calendar of 365 days in a year decimal. So
the two issues are separated. The Aristean calendar is similar to
the present calendar but made perpetual and the Aristean Decimal
Time is made as decimal for simpler expression and calculation.

Best regards,
Motto: pro aris et focis

--- In ISO8601@yahoogroups.com, NGUYEN Ivy <nguyenivy@g...> wrote:
>
main
> unit is a decimal multiple, but what kind of multiple is the
question.
> Not a straight 10/100/100 (well, really 9/99/99) system.
Otherwise, it
> works very nicely. It would be possible to memorise and know in
> advance what weekday every date falls on every year. :-)
>
> On 14/10/05, Aristeo Canlas Fernando <calendaracf@y...> wrote:
> > My Dear Fellowmen,
> >
> > The Aristean Calendar is a perpetual calendar. The day of the
week
> > and the date are the same year after year. For example,
presently,
> > if your birthday falls on Monday, next year, it would fall on
> > Tuesday, etc.
> >
> > In the Aristean calendar, your birthday will fall on the same
day of
> > the week always. Hence, if your birthday is on October 15, every
> > year, your birthday will fall on Monday.
> >
> > What is the day number of October 15? It is the 288th day of the
> > year. The day before is Sunday, the 277th day, October 14. It
is a
> > red-letter day because it is Sunday and the end of the week,
week 41.
> >
> > The table of Day Number is found at
day
> > number is known and you would like to determine the day of the
week,
> > the way of finding it is found at
> >
> > Your questions will be appreciated.
> >
> > Best regards,
> > Aristeo Canlas Fernando, Peace Crusader
> > Motto: pro aris et focis
>
• Good point! :-)
Message 3 of 7 , Oct 15, 2005
Good point! :-)

On 14/10/05, Aristeo Canlas Fernando <calendaracf@...> wrote:
> Dear Ivy and my Fellowmen,
>
> You are looking for a "straight 10/100/100" decimal format for a
> day. The Aristean Decimal Time is 100/10/100. It is still in
> decimal though. And dividing the day into 100 units may be better
> than just 10. Each of the 100 units may just be about equal to the
> present 15 minutes. And this is how we tell the time -- quarter
> past the hour, half hour, quarter to the hour. An hour seems to be
> a long time compared to a quarter of it.
>
> It is hard to make the calendar of 365 days in a year decimal. So
> the two issues are separated. The Aristean calendar is similar to
> the present calendar but made perpetual and the Aristean Decimal
> Time is made as decimal for simpler expression and calculation.
>
> Best regards,
> Aristeo Canlas Fernando, Peace Crusader
> Motto: pro aris et focis
• This group is about ISO 8601, which uses the Gregorian calendar. I would recommend posting this to the Calendar-Reform group at
Message 4 of 7 , Oct 15, 2005
This group is about ISO 8601, which uses the Gregorian calendar. I
would recommend posting this to the Calendar-Reform group at
http://groups.yahoo.com/group/Calendar-Reform/.

Regarding time format, I proposed adding fractional day representation
in my post dated April 1, which you can read at
http://groups.yahoo.com/group/ISO8601/message/1287 . Although this is
not part of the ISO standard, fractional days are used with dates by
astronomers, in forms such as 2005 Oct. 16.110.

Note that currently ISO 8601 accepts the representation of time of the
day using fractional hours, minutes or seconds, such as:

2005-10-16T02.6875 (fractional hour)
2005-10-16T02:41.25 (fractional minute)
2005-10-16T02:41:15.001 (fractional second)

John Hynes

--- In ISO8601@yahoogroups.com, "Aristeo Canlas Fernando"
<calendaracf@y...> wrote:
>
> My Dear Fellowmen,
>
> The Aristean Calendar is a perpetual calendar. The day of the week
> and the date are the same year after year. For example, presently,
> if your birthday falls on Monday, next year, it would fall on
> Tuesday, etc.
>
> In the Aristean calendar, your birthday will fall on the same day of
> the week always. Hence, if your birthday is on October 15, every
> year, your birthday will fall on Monday.
>
> What is the day number of October 15? It is the 288th day of the
> year. The day before is Sunday, the 277th day, October 14. It is a
> red-letter day because it is Sunday and the end of the week, week 41.
>
> The table of Day Number is found at
> number is known and you would like to determine the day of the week,
> the way of finding it is found at
>
> Your questions will be appreciated.
>
> Best regards,
> Aristeo Canlas Fernando, Peace Crusader
> Motto: pro aris et focis
>
• Dear John and my Fellowmen, Thank you, John, for pointing out that the present ISO 8601 is for the Gregorian calendar. I posted here the Aristean calendar
Message 5 of 7 , Oct 16, 2005
Dear John and my Fellowmen,

Thank you, John, for pointing out that the present ISO 8601 is for
the Gregorian calendar. I posted here the Aristean calendar because
it is similar to the Gregorian calendar. Both are solar calendars
with 365 days in common years and 366 days in leap years. So the
provisions of ISO 8601 may be applied also when the Aristean
calendar is implemented.

Of course, some rules have to be modified. For example, week 1 is
simply and always will be January 1 to 7 in the Aristean calendar.
No ifs anymore. There are day numbers in the Aristean calendar
which will always be Sunday, red-letter day. In the Gregorian
calendar, a day number may be Monday (day 1) or Tuesday (day 2), and
so forth. I just wanted to illustrate that the Aristean calendar is
much simpler than the Gregorian calendar. So there is a need to
reform the Gregorian calendar and apply the relevant ISO 8601 rules
to it and modify some of them.

Fractional part of the day should be added to ISO 8601 since this is
used by astronomers using the Julian Number (or Julian Day Number?).

Best regards,
Motto: pro aris et focis

--- In ISO8601@yahoogroups.com, "John Hynes" <john@h...> wrote:
>
> This group is about ISO 8601, which uses the Gregorian calendar. I
> would recommend posting this to the Calendar-Reform group at
> http://groups.yahoo.com/group/Calendar-Reform/.
>
> Regarding time format, I proposed adding fractional day
representation
> in my post dated April 1, which you can read at
> http://groups.yahoo.com/group/ISO8601/message/1287 . Although
this is
> not part of the ISO standard, fractional days are used with dates
by
> astronomers, in forms such as 2005 Oct. 16.110.
>
> Note that currently ISO 8601 accepts the representation of time of
the
> day using fractional hours, minutes or seconds, such as:
>
> 2005-10-16T02.6875 (fractional hour)
> 2005-10-16T02:41.25 (fractional minute)
> 2005-10-16T02:41:15.001 (fractional second)
>
> John Hynes
• Dear Ivy and my ISO8601 Enthusiasts, Thank you, Ivy, for you comment. I hope you will support the Aristean calendar and the Aristean Decimal Time. We just
Message 6 of 7 , Oct 16, 2005
Dear Ivy and my ISO8601 Enthusiasts,

Thank you, Ivy, for you comment.

I hope you will support the Aristean calendar and the Aristean
Decimal Time. We just need to reform our calendar and time
systems. They can be improved and we can do it sooner rather than
later.

As one wise man said:
If we don't speak up, who will speak up?
If we don't move, who will move?
If not now, when will it ever be?

Best regards,
Motto: pro aris et focis

--- In ISO8601@yahoogroups.com, NGUYEN Ivy <nguyenivy@g...> wrote:
>
> Good point! :-)
>
> On 14/10/05, Aristeo Canlas Fernando <calendaracf@y...> wrote:
> > Dear Ivy and my Fellowmen,
> >
> > You are looking for a "straight 10/100/100" decimal format for a
> > day. The Aristean Decimal Time is 100/10/100. It is still in
> > decimal though. And dividing the day into 100 units may be
better
> > than just 10. Each of the 100 units may just be about equal to
the
> > present 15 minutes. And this is how we tell the time -- quarter
> > past the hour, half hour, quarter to the hour. An hour seems to
be
> > a long time compared to a quarter of it.
> >
> > It is hard to make the calendar of 365 days in a year decimal.
So
> > the two issues are separated. The Aristean calendar is similar
to
> > the present calendar but made perpetual and the Aristean Decimal
> > Time is made as decimal for simpler expression and calculation.
> >
> > Best regards,
> > Aristeo Canlas Fernando, Peace Crusader
> > Motto: pro aris et focis