[html5] r7196 - [e] (0) Clarify that time zones change, to encourage implementors not to make ba [...]

[whatwg at whatwg.org]

Author: ianh
Date: 2012-07-19 21:39:55 -0700 (Thu, 19 Jul 2012)
New Revision: 7196

Modified:
   complete.html
   index
   source
Log:
[e] (0) Clarify that time zones change, to encourage implementors not to make bad assumptions.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=17989
Affected topics: HTML

Modified: complete.html
===================================================================
--- complete.html	2012-07-20 04:31:44 UTC (rev 7195)
+++ complete.html	2012-07-20 04:39:55 UTC (rev 7196)
@@ -6037,9 +6037,12 @@
     </ol></li>
 
   </ul><p class=note>This format allows for time-zone offsets from -23:59
-  to +23:59. In practice, however, the range of offsets of actual time
-  zones is -12:00 to +14:00, and the minutes component of offsets of
-  actual time zones is always either 00, 30, or 45.</p>
+  to +23:59. In practice, however, right now the range of offsets of
+  actual time zones is -12:00 to +14:00, and the minutes component of
+  offsets of actual time zones is always either 00, 30, or 45. There
+  is no guarantee that this will remain so forever, however; time
+  zones are used as political footballs and are thus subject to very
+  whimsical policy decisions.</p>
 
   <p class=note>See also the usage notes and examples in the <a href=#concept-datetime title=concept-datetime>global date and time</a> section below
   for details on using time-zone offsets with historical times that

Modified: index
===================================================================
--- index	2012-07-20 04:31:44 UTC (rev 7195)
+++ index	2012-07-20 04:39:55 UTC (rev 7196)
@@ -6037,9 +6037,12 @@
     </ol></li>
 
   </ul><p class=note>This format allows for time-zone offsets from -23:59
-  to +23:59. In practice, however, the range of offsets of actual time
-  zones is -12:00 to +14:00, and the minutes component of offsets of
-  actual time zones is always either 00, 30, or 45.</p>
+  to +23:59. In practice, however, right now the range of offsets of
+  actual time zones is -12:00 to +14:00, and the minutes component of
+  offsets of actual time zones is always either 00, 30, or 45. There
+  is no guarantee that this will remain so forever, however; time
+  zones are used as political footballs and are thus subject to very
+  whimsical policy decisions.</p>
 
   <p class=note>See also the usage notes and examples in the <a href=#concept-datetime title=concept-datetime>global date and time</a> section below
   for details on using time-zone offsets with historical times that

Modified: source
===================================================================
--- source	2012-07-20 04:31:44 UTC (rev 7195)
+++ source	2012-07-20 04:39:55 UTC (rev 7196)
@@ -5491,9 +5491,12 @@
   </ul>
 
   <p class="note">This format allows for time-zone offsets from -23:59
-  to +23:59. In practice, however, the range of offsets of actual time
-  zones is -12:00 to +14:00, and the minutes component of offsets of
-  actual time zones is always either 00, 30, or 45.</p>
+  to +23:59. In practice, however, right now the range of offsets of
+  actual time zones is -12:00 to +14:00, and the minutes component of
+  offsets of actual time zones is always either 00, 30, or 45. There
+  is no guarantee that this will remain so forever, however; time
+  zones are used as political footballs and are thus subject to very
+  whimsical policy decisions.</p>
 
   <p class="note">See also the usage notes and examples in the <span
   title="concept-datetime">global date and time</span> section below