This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
If you don't specify a locale, then it will use the default locale of your system. If that also happens to be US English (or some other language where the abbreviation for April is "Apr"), then ofcourse the results will be the same.