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copied!<p>It seems like you're trying to get from a specific local time to a <code>DateTime</code> instance and you want that to be robust against daylight savings. Try this... (note I'm in US/Eastern, so our transition date was 13 Mar 11; I had to find the right date to get the exception you got today. Updated my code below for CET, which transitions today.) The insight here is that Joda provides <a href="http://joda-time.sourceforge.net/apidocs/org/joda/time/LocalDateTime.html" rel="noreferrer"><code>LocalDateTime</code></a> to let you reason about a local wall-clock setting and whether it's legal in your timezone or not. In this case, I just add an hour if the time doesn't exist (your application has to decide if this is the right policy.)</p> <pre><code>import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.joda.time.LocalDateTime; class TestTz { public static void main(String[] args) { final DateTimeZone dtz = DateTimeZone.forID("CET"); LocalDateTime ldt = new LocalDateTime(dtz) .withYear(2011) .withMonthOfYear(3) .withDayOfMonth(27) .withHourOfDay(2); // this is just here to illustrate I'm solving the problem; // don't need in operational code try { DateTime myDateBorken = ldt.toDateTime(dtz); } catch (IllegalArgumentException iae) { System.out.println("Sure enough, invalid instant due to time zone offset transition!"); } if (dtz.isLocalDateTimeGap(ldt)) { ldt = ldt.withHourOfDay(3); } DateTime myDate = ldt.toDateTime(dtz); System.out.println("No problem: "+myDate); } } </code></pre> <p>This code produces:</p> <pre> Sure enough, invalid instant due to time zone offset transition! No problem: 2011-03-27T03:00:00.000+02:00 </pre>

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