HP who acquired Palm now have taken the wraps off their very first submission to the App Catalog "WORLD TIME for webOS!," and it gives you the current time for any city on the planet. When you go to the apps site, a message is displayed "The application is not currently available. Please try again later."
Actually, the app is now pulled back, and Palm's own Chuq Von Rospach announced in the comments:
"hey, "World time" was only intended for internal and got published by accident. We've pulled it from public distribution. It's not an "official" HP app intended for external publication, but is part of a "let's all learn how to program webOS" that some parts of HP is doing."
More Info: World Time