[jira] [Commented] (FREEMARKER-95) Wrong day of the week shown for the Thai locale

["Daniel Dekany (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FREEMARKER-95?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16452564#comment-16452564 ] 

Daniel Dekany commented on FREEMARKER-95:
-----------------------------------------

I have tried this:
{code:java}
<#setting locale='th_TH'>
<#setting timeZone='GMT+7'>
${'2018-04-25T12:00Z'?datetime.iso?string("EEEE, z")}
{code}
and it outputs this:
{code:java}
วันพุธ, GMT+07:00
{code}
That's Wednesday (as it is in Europe for example), and I take that's wrong. But, I have checked and FreeMarker uses a {{sun.util.BuddhistCalendar}} there, not the Gergorian calendar. So I wonder why the result is still wrong. Is it possible that Java (1.8.0_144 on Windows 7 64 bit in my case) doesn't support this calendar properly? Or, that the {{BuddhistCalendar}} has some country specific options that Java doesn't set according your locale? That is, can you make pure Java output the correct day? Here's the piece of code I have tried, and it prints the same as the template:
{code:java}
Locale locale = new Locale("th", "TH");
System.out.println(locale.getDisplayName());
SimpleDateFormat sdf = new SimpleDateFormat("EEEE\nz", locale);
sdf.setTimeZone(TimeZone.getTimeZone("GMT+7"));
System.out.println(sdf.getCalendar());
System.out.println(sdf.format(new Date()));
{code}

> Wrong day of the week shown for the Thai locale
> -----------------------------------------------
>
>                 Key: FREEMARKER-95
>                 URL: https://issues.apache.org/jira/browse/FREEMARKER-95
>             Project: Apache Freemarker
>          Issue Type: Bug
>            Reporter: James Barnes
>            Priority: Major
>
> Freemarker returns the wrong day of the week when the user sets the the locale to Thai. It would seem that this is a result of Freemarker not correcting for the Buddhist calendar. The day of the week is currently out of sync but will be back in sync on Feb 28 2019 and then will be out of sync again on Feb 29 2020. So currently when the user sets the locale to Thai, FreeMarker uses the days of the week from 1475 on the Gregorian calendar.



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