A typo/error referencing Julian proleptic calendar?

[Mike Kaganski <mikekaganski@hotmail.com>]

Hi!

Reading ODF 1.4 part 3 sect. 19.341 number:calendar [1]:

> * gregorian: Gregorian calendar with cut-off date 1582-10-04, 1582-10-15
> following. Dates before cut-off date are calculated in Julian proleptic
> calendar [ISO8601], Section 2.4.1. 

But what is "[ISO8601], Section 2.4.1"? The ODF standard refers to ISO 
8601:2004; and in that standard, there were *no* section 2.4.1 (or 2.4, 
for that matter). It included exactly these three occurrences of "Julian":

> 2.2.15
> Gregorian calendar
> calendar in general use, introduced in 1582 to define a calendar year that
> more closely approximated the tropical year than the *Julian* calendar
> ...
> 3.2.1 The Gregorian calendar
> ...
> The introduction of the Gregorian calendar included the cancellation 
> of the
> accumulated inaccuracies of the *Julian* calendar. However, no dates 
> shall be
> inserted or deleted when determining dates in the proleptic Gregorian 
> calendar.
> ...
> EXAMPLE The Gregorian calendar was introduced on 15 October 1582. In the
> calendar set by this standard the calendar day preceding that calendar day
> is referred to as 14 October 1582. In the *Julian* calendar that calendar
> day is referred to as 4 October 1582.

None of the mentions defines a "Julian proleptic calendar".

Is the reference to "Julian proleptic calendar" in ODF an error? Is the 
reference to the specific standard/pert of the standard an error?

Having this definition, it is very problematic to have a consistent date 
handling for pre-cut-off dates; see TDF bug 144699 [2].

In fact, this makes it completely impossible to implement the very same 
standard that is referred (ISO 8601), which explicitly states that the 
day before the cut-off should be 1582-10-14, not 1582-10-04.

Additionally, this makes it inconsistent with another part of ODF: part 
4 sect. 7.4 Year 1583, requiring use of proleptic Gregorian system for 
implementations supporting earlier dates.

I propose to change the mention of "Julian" in ODF with "Gregorian", and 
fix the reference.


[1] 
http://docs.oasis-open.org/office/OpenDocument/v1.3/OpenDocument-v1.3-part3-schema.html#a_19_341_number_calendar

[2] https://bugs.documentfoundation.org/show_bug.cgi?id=144699

--
Best regards,
Mike Kaganski