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POWhy does this Calendar fail?
 

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    <p>So I have a Java app that respects your timezone and I noticed some timezones have invalid dates...</p> <p>I'm using <code>SimpleDateFormatter('yyyyMMdd')</code> to do the parsing... and found that it fails with a <code>ParseException</code> on certain timezone-date combos.</p> <p>I looked into the internals and it looks like it's failing because the <code>Calendar</code> class is throwing an <code>IllegalArgumentException</code>.</p> <p>I'm using <code>setLenient(false)</code> because I don't want the parsing making assumptions. The default using <code>setLenient(true)</code> assumes the missing fields and does not throw the <code>IllegalArgumentException</code>.</p> <p>Why does this one work:</p> <pre><code> public void testCalendarPass() { Calendar cal = Calendar.getInstance(); cal.clear(); cal.setLenient(false); cal.set(Calendar.YEAR, 1995); cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DAY_OF_MONTH,1); //This call will pass cal.getTime(); } </code></pre> <p>While this one in Pacific/Kiritimati fails:</p> <pre><code>public void testCalendarFailure() { Calendar cal = Calendar.getInstance(); cal.clear(); cal.setTimeZone(TimeZone.getTimeZone("Pacific/Kiritimati")); cal.setLenient(false); cal.set(Calendar.YEAR, 1995); cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DAY_OF_MONTH,1); //This call will fail cal.getTime(); } </code></pre> <p>Does January 1, 1995 not exist in Kiritimati? How do they reference time that falls within that gap?</p> <p>For now, when I encounter the <code>ParseException</code> I default to the server's timezone for parsing. But this introduces an offset of up to 24 hours (depending on the timezone).</p> <p>Here's a list of other dates that fail on other timezones:</p> <pre><code>19930820 FAILS on Kwajalein 19930820 FAILS on Pacific/Kwajalein 20111230 FAILS on MIT 20111230 FAILS on Pacific/Apia 19950101 FAILS on Pacific/Enderbury 20111230 FAILS on Pacific/Fakaofo 19950101 FAILS on Pacific/Kiritimati </code></pre>
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