[html5] r7740 - [e] (0) Clarify use of the term 'proleptic'. Fixing https://www.w3.org/Bugs/Publ [...]
whatwg at whatwg.org
whatwg at whatwg.org
Thu Mar 7 15:40:06 PST 2013
Author: ianh
Date: 2013-03-07 15:40:05 -0800 (Thu, 07 Mar 2013)
New Revision: 7740
Modified:
complete.html
index
source
Log:
[e] (0) Clarify use of the term 'proleptic'.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=20649
Affected topics: HTML
Modified: complete.html
===================================================================
--- complete.html 2013-03-07 23:14:32 UTC (rev 7739)
+++ complete.html 2013-03-07 23:40:05 UTC (rev 7740)
@@ -4986,6 +4986,12 @@
</div>
+ <p>Where this specification refers to the <dfn id=proleptic-gregorian-calendar>proleptic Gregorian calendar</dfn>, it means the
+ modern Gregorian calendar, extrapolated backwards to year 1. A date in the <a href=#proleptic-gregorian-calendar>proleptic
+ Gregorian calendar</a>, sometimes explicitly referred to as a <dfn id=proleptic-gregorian-date>proleptic-Gregorian
+ date</dfn>, is one that is described using that calendar even if that calendar was not in use at
+ the time (or place) in question. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
+
<p class=note>The use of the Gregorian calendar as the wire format in this specification is an
arbitrary choice resulting from the cultural biases of those involved in the decision. See also
the section discussing <a href=#input-author-notes>date, time, and number formats</a> in forms
@@ -4995,7 +5001,8 @@
<h5 id=months><span class=secno>2.4.5.1 </span>Months</h5>
- <p>A <dfn id=concept-month title=concept-month>month</dfn> consists of a specific proleptic Gregorian date with
+<!--CLEANUP-->
+ <p>A <dfn id=concept-month title=concept-month>month</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a> with
no time-zone information and no date information beyond a year and a month. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-month-string>valid month string</dfn> representing a year <var title="">year</var> and
@@ -5054,7 +5061,8 @@
<h5 id=dates><span class=secno>2.4.5.2 </span>Dates</h5>
- <p>A <dfn id=concept-date title=concept-date>date</dfn> consists of a specific proleptic Gregorian date with no
+<!--CLEANUP-->
+ <p>A <dfn id=concept-date title=concept-date>date</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a> with no
time-zone information, consisting of a year, a month, and a day. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-date-string>valid date string</dfn> representing a year <var title="">year</var>, month
@@ -5297,8 +5305,9 @@
<h5 id=local-dates-and-times><span class=secno>2.4.5.5 </span>Local dates and times</h5>
+<!--CLEANUP-->
<p>A <dfn id=concept-datetime-local title=concept-datetime-local>local date and time</dfn> consists of a specific
- proleptic Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an
+ <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a>, consisting of a year, a month, and a day, and a time, consisting of an
hour, a minute, a second, and a fraction of a second, but expressed without a time zone. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-local-date-and-time-string>valid local date and time string</dfn> representing a date and time if it
@@ -5485,8 +5494,9 @@
<h5 id=global-dates-and-times><span class=secno>2.4.5.7 </span>Global dates and times</h5>
- <p>A <dfn id=concept-datetime title=concept-datetime>global date and time</dfn> consists of a specific proleptic
- Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an hour, a
+<!--CLEANUP-->
+ <p>A <dfn id=concept-datetime title=concept-datetime>global date and time</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian
+ date</a>, consisting of a year, a month, and a day, and a time, consisting of an hour, a
minute, a second, and a fraction of a second, expressed with a time-zone offset, consisting of a
signed number of hours and minutes. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
@@ -5538,12 +5548,13 @@
character. The string "<code title="">2001-12-21 12:00Z</code>" (with two spaces
between the components) would not be parsed successfully.</li>
+<!--CLEANUP-->
<li>To unambiguously identify a moment in time prior to the introduction of the Gregorian
calendar (insofar as moments in time before the formation of UTC can be unambiguously
identified), the date has to be first converted to the Gregorian calendar from the calendar in
use at the time (e.g. from the Julian calendar). The date of Nero's birth is the 15th of
- December 37, in the Julian Calendar, which is the 13th of December 37 in the proleptic Gregorian
- Calendar.</li> <!-- This might not be true. I can't find a reference that gives his birthday
+ December 37, in the Julian Calendar, which is the 13th of December 37 in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian
+ calendar</a>.</li> <!-- This might not be true. I can't find a reference that gives his birthday
with an explicit statement about the calendar being used. However, it seems unlikely that it
would be given in the Gregorian calendar, so I assume sites use the Julian one. -->
@@ -5623,9 +5634,10 @@
1970. Consecutive weeks are numbered sequentially. The week before the number 1 week in a
week-year is the last week in the previous week-year, and vice versa. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
+<!--CLEANUP-->
<p>A week-year with a number <var title="">year</var> has 53 weeks if it corresponds to either a
- year <var title="">year</var> in the proleptic Gregorian calendar that has a Thursday as its first
- day (January 1st), or a year <var title="">year</var> in the proleptic Gregorian calendar that has
+ year <var title="">year</var> in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a> that has a Thursday as its first
+ day (January 1st), or a year <var title="">year</var> in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a> that has
a Wednesday as its first day (January 1st) and where <var title="">year</var> is a number
divisible by 400, or a number divisible by 4 but not by 100. All other week-years have 52
weeks.</p>
@@ -5634,7 +5646,7 @@
of the last day of a week-year with 52 weeks is 52.</p>
<p class=note>The week-year number of a particular day can be different than the number of the
- year that contains that day in the proleptic Gregorian calendar. The first week in a week-year
+ year that contains that day in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a>. The first week in a week-year
<var title="">y</var> is the week that contains the first Thursday of the Gregorian year <var title="">y</var>.</p>
<p class=note>For modern purposes, a <a href=#concept-week title=concept-week>week</a> as defined here is
Modified: index
===================================================================
--- index 2013-03-07 23:14:32 UTC (rev 7739)
+++ index 2013-03-07 23:40:05 UTC (rev 7740)
@@ -4986,6 +4986,12 @@
</div>
+ <p>Where this specification refers to the <dfn id=proleptic-gregorian-calendar>proleptic Gregorian calendar</dfn>, it means the
+ modern Gregorian calendar, extrapolated backwards to year 1. A date in the <a href=#proleptic-gregorian-calendar>proleptic
+ Gregorian calendar</a>, sometimes explicitly referred to as a <dfn id=proleptic-gregorian-date>proleptic-Gregorian
+ date</dfn>, is one that is described using that calendar even if that calendar was not in use at
+ the time (or place) in question. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
+
<p class=note>The use of the Gregorian calendar as the wire format in this specification is an
arbitrary choice resulting from the cultural biases of those involved in the decision. See also
the section discussing <a href=#input-author-notes>date, time, and number formats</a> in forms
@@ -4995,7 +5001,8 @@
<h5 id=months><span class=secno>2.4.5.1 </span>Months</h5>
- <p>A <dfn id=concept-month title=concept-month>month</dfn> consists of a specific proleptic Gregorian date with
+<!--CLEANUP-->
+ <p>A <dfn id=concept-month title=concept-month>month</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a> with
no time-zone information and no date information beyond a year and a month. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-month-string>valid month string</dfn> representing a year <var title="">year</var> and
@@ -5054,7 +5061,8 @@
<h5 id=dates><span class=secno>2.4.5.2 </span>Dates</h5>
- <p>A <dfn id=concept-date title=concept-date>date</dfn> consists of a specific proleptic Gregorian date with no
+<!--CLEANUP-->
+ <p>A <dfn id=concept-date title=concept-date>date</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a> with no
time-zone information, consisting of a year, a month, and a day. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-date-string>valid date string</dfn> representing a year <var title="">year</var>, month
@@ -5297,8 +5305,9 @@
<h5 id=local-dates-and-times><span class=secno>2.4.5.5 </span>Local dates and times</h5>
+<!--CLEANUP-->
<p>A <dfn id=concept-datetime-local title=concept-datetime-local>local date and time</dfn> consists of a specific
- proleptic Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an
+ <a href=#proleptic-gregorian-date>proleptic-Gregorian date</a>, consisting of a year, a month, and a day, and a time, consisting of an
hour, a minute, a second, and a fraction of a second, but expressed without a time zone. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
<p>A string is a <dfn id=valid-local-date-and-time-string>valid local date and time string</dfn> representing a date and time if it
@@ -5485,8 +5494,9 @@
<h5 id=global-dates-and-times><span class=secno>2.4.5.7 </span>Global dates and times</h5>
- <p>A <dfn id=concept-datetime title=concept-datetime>global date and time</dfn> consists of a specific proleptic
- Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an hour, a
+<!--CLEANUP-->
+ <p>A <dfn id=concept-datetime title=concept-datetime>global date and time</dfn> consists of a specific <a href=#proleptic-gregorian-date>proleptic-Gregorian
+ date</a>, consisting of a year, a month, and a day, and a time, consisting of an hour, a
minute, a second, and a fraction of a second, expressed with a time-zone offset, consisting of a
signed number of hours and minutes. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
@@ -5538,12 +5548,13 @@
character. The string "<code title="">2001-12-21 12:00Z</code>" (with two spaces
between the components) would not be parsed successfully.</li>
+<!--CLEANUP-->
<li>To unambiguously identify a moment in time prior to the introduction of the Gregorian
calendar (insofar as moments in time before the formation of UTC can be unambiguously
identified), the date has to be first converted to the Gregorian calendar from the calendar in
use at the time (e.g. from the Julian calendar). The date of Nero's birth is the 15th of
- December 37, in the Julian Calendar, which is the 13th of December 37 in the proleptic Gregorian
- Calendar.</li> <!-- This might not be true. I can't find a reference that gives his birthday
+ December 37, in the Julian Calendar, which is the 13th of December 37 in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian
+ calendar</a>.</li> <!-- This might not be true. I can't find a reference that gives his birthday
with an explicit statement about the calendar being used. However, it seems unlikely that it
would be given in the Gregorian calendar, so I assume sites use the Julian one. -->
@@ -5623,9 +5634,10 @@
1970. Consecutive weeks are numbered sequentially. The week before the number 1 week in a
week-year is the last week in the previous week-year, and vice versa. <a href=#refsGREGORIAN>[GREGORIAN]</a></p>
+<!--CLEANUP-->
<p>A week-year with a number <var title="">year</var> has 53 weeks if it corresponds to either a
- year <var title="">year</var> in the proleptic Gregorian calendar that has a Thursday as its first
- day (January 1st), or a year <var title="">year</var> in the proleptic Gregorian calendar that has
+ year <var title="">year</var> in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a> that has a Thursday as its first
+ day (January 1st), or a year <var title="">year</var> in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a> that has
a Wednesday as its first day (January 1st) and where <var title="">year</var> is a number
divisible by 400, or a number divisible by 4 but not by 100. All other week-years have 52
weeks.</p>
@@ -5634,7 +5646,7 @@
of the last day of a week-year with 52 weeks is 52.</p>
<p class=note>The week-year number of a particular day can be different than the number of the
- year that contains that day in the proleptic Gregorian calendar. The first week in a week-year
+ year that contains that day in the <a href=#proleptic-gregorian-calendar>proleptic Gregorian calendar</a>. The first week in a week-year
<var title="">y</var> is the week that contains the first Thursday of the Gregorian year <var title="">y</var>.</p>
<p class=note>For modern purposes, a <a href=#concept-week title=concept-week>week</a> as defined here is
Modified: source
===================================================================
--- source 2013-03-07 23:14:32 UTC (rev 7739)
+++ source 2013-03-07 23:40:05 UTC (rev 7740)
@@ -4056,6 +4056,12 @@
</div>
+ <p>Where this specification refers to the <dfn>proleptic Gregorian calendar</dfn>, it means the
+ modern Gregorian calendar, extrapolated backwards to year 1. A date in the <span>proleptic
+ Gregorian calendar</span>, sometimes explicitly referred to as a <dfn>proleptic-Gregorian
+ date</dfn>, is one that is described using that calendar even if that calendar was not in use at
+ the time (or place) in question. <a href="#refsGREGORIAN">[GREGORIAN]</a></p>
+
<p class="note">The use of the Gregorian calendar as the wire format in this specification is an
arbitrary choice resulting from the cultural biases of those involved in the decision. See also
the section discussing <a href="#input-author-notes">date, time, and number formats</a> in forms
@@ -4065,7 +4071,8 @@
<h5>Months</h5>
- <p>A <dfn title="concept-month">month</dfn> consists of a specific proleptic Gregorian date with
+<!--CLEANUP-->
+ <p>A <dfn title="concept-month">month</dfn> consists of a specific <span>proleptic-Gregorian date</span> with
no time-zone information and no date information beyond a year and a month. <a
href="#refsGREGORIAN">[GREGORIAN]</a></p>
@@ -4142,7 +4149,8 @@
<h5>Dates</h5>
- <p>A <dfn title="concept-date">date</dfn> consists of a specific proleptic Gregorian date with no
+<!--CLEANUP-->
+ <p>A <dfn title="concept-date">date</dfn> consists of a specific <span>proleptic-Gregorian date</span> with no
time-zone information, consisting of a year, a month, and a day. <a
href="#refsGREGORIAN">[GREGORIAN]</a></p>
@@ -4464,8 +4472,9 @@
<h5>Local dates and times</h5>
+<!--CLEANUP-->
<p>A <dfn title="concept-datetime-local">local date and time</dfn> consists of a specific
- proleptic Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an
+ <span>proleptic-Gregorian date</span>, consisting of a year, a month, and a day, and a time, consisting of an
hour, a minute, a second, and a fraction of a second, but expressed without a time zone. <a
href="#refsGREGORIAN">[GREGORIAN]</a></p>
@@ -4716,8 +4725,9 @@
<h5>Global dates and times</h5>
- <p>A <dfn title="concept-datetime">global date and time</dfn> consists of a specific proleptic
- Gregorian date, consisting of a year, a month, and a day, and a time, consisting of an hour, a
+<!--CLEANUP-->
+ <p>A <dfn title="concept-datetime">global date and time</dfn> consists of a specific <span>proleptic-Gregorian
+ date</span>, consisting of a year, a month, and a day, and a time, consisting of an hour, a
minute, a second, and a fraction of a second, expressed with a time-zone offset, consisting of a
signed number of hours and minutes. <a href="#refsGREGORIAN">[GREGORIAN]</a></p>
@@ -4779,12 +4789,13 @@
character. The string "<code title="">2001-12-21 12:00Z</code>" (with two spaces
between the components) would not be parsed successfully.</li>
+<!--CLEANUP-->
<li>To unambiguously identify a moment in time prior to the introduction of the Gregorian
calendar (insofar as moments in time before the formation of UTC can be unambiguously
identified), the date has to be first converted to the Gregorian calendar from the calendar in
use at the time (e.g. from the Julian calendar). The date of Nero's birth is the 15th of
- December 37, in the Julian Calendar, which is the 13th of December 37 in the proleptic Gregorian
- Calendar.</li> <!-- This might not be true. I can't find a reference that gives his birthday
+ December 37, in the Julian Calendar, which is the 13th of December 37 in the <span>proleptic Gregorian
+ calendar</span>.</li> <!-- This might not be true. I can't find a reference that gives his birthday
with an explicit statement about the calendar being used. However, it seems unlikely that it
would be given in the Gregorian calendar, so I assume sites use the Julian one. -->
@@ -4881,9 +4892,10 @@
week-year is the last week in the previous week-year, and vice versa. <a
href="#refsGREGORIAN">[GREGORIAN]</a></p>
+<!--CLEANUP-->
<p>A week-year with a number <var title="">year</var> has 53 weeks if it corresponds to either a
- year <var title="">year</var> in the proleptic Gregorian calendar that has a Thursday as its first
- day (January 1st), or a year <var title="">year</var> in the proleptic Gregorian calendar that has
+ year <var title="">year</var> in the <span>proleptic Gregorian calendar</span> that has a Thursday as its first
+ day (January 1st), or a year <var title="">year</var> in the <span>proleptic Gregorian calendar</span> that has
a Wednesday as its first day (January 1st) and where <var title="">year</var> is a number
divisible by 400, or a number divisible by 4 but not by 100. All other week-years have 52
weeks.</p>
@@ -4892,7 +4904,7 @@
of the last day of a week-year with 52 weeks is 52.</p>
<p class="note">The week-year number of a particular day can be different than the number of the
- year that contains that day in the proleptic Gregorian calendar. The first week in a week-year
+ year that contains that day in the <span>proleptic Gregorian calendar</span>. The first week in a week-year
<var title="">y</var> is the week that contains the first Thursday of the Gregorian year <var
title="">y</var>.</p>
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