Why is 1942/4/3 00:00:00 an illegal date in java.util.Calendar?

Posted by Aleksi on Stack Overflow See other posts from Stack Overflow or by Aleksi
Published on 2010-06-16T13:10:22Z Indexed on 2010/06/16 13:22 UTC
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calendar

Is there something special in the date 3rd of April 1942? For some reason the the hour of day 0 (12:00 am) is illegal for this specific date. The date is accepted when a lenient calendar is used but the hour of day is incremented to 1 (1:00 am).

Relevant code

java.util.Calendar calendar = java.util.Calendar.getInstance();
calendar.clear();
calendar.setLenient(false);
calendar.set(1942, 3, 3, 0, 0, 0);
calendar.getTimeInMillis();

Exception

java.lang.IllegalArgumentException: HOUR_OF_DAY
    at java.util.GregorianCalendar.computeTime(Unknown Source)
    at java.util.Calendar.updateTime(Unknown Source)
    at java.util.Calendar.getTimeInMillis(Unknown Source)

I'd really prefer is the dates were not lenient as I don't want to accept impossible dates.

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