NCsoft announced today they would be shifting their customer service time from EST to UTC (which is a fancy way of saying GMT). Why do you care? It might move your billing date. The announcement stated:

On New Year's Day, January 1, 2008, we'll be changing the time zone used for all customer account work from Eastern time (EST) to Coordinated Universal Time (UTC, basically the same as GMT). This shouldn't make much of a difference to most customers, though some may notice (depending on what time during the day their billing takes place) that the listed billing date may move up by a day (however, technically speaking, you're actually not gaining any extra time).

If you are someone who keeps an eye on their bank statement, you might want to check next month.