All of the arguments in this post supporting UTC could be applied to <i>any</i> timezone without daylight saving.<p>If your company is entirely located in California or some other Pacific Time location, consider putting your servers on Arizona time. There's no daylight saving, and for most of the year, the server time will match your wristwatch. In the winter, when California is on PST, the servers will only be off by an hour.<p>I find that much more tolerable than the hassles of UTC servers, where you can't instantly translate between server time and wall time in your head, and server midnight rolls over in the middle of the California day, and thus datestamped logfiles don't match up at all with your wall calendar.<p>Edit: If you're going to downvote, please post a comment explaining why, so that readers can learn something.