Account services phone number.

Here's a quick table to reference:
HST = PDT - 3 hours
MDT = PDT + 1 hour
CDT = PDT + 2 hours
EDT = PDT + 3 hours
ADT = PDT + 4 hours
Newfoundland = PDT + 4.5 hours
GMT = PDT + 7 hours
AEST = PDT + 17 hours

Our times are normally referenced in Pacific Coast time.

Billing and Account Services
Phone Support - 1 (800) 59-BLIZZ (1 (800) 592 5499)
Live Representatives Available 7 days a week, 7am to 8pm Pacific Time
E-mail Support - [email protected]

Players in Australia should call 1-800-041-378
Players in Singapore should call 800-2549-9273
Players in Chile should call 1230-020-5554
Players in Mexico should call 001-888-578-7628
Players in Argentina should call 0800-333-0778
All other international players should call: (949) 955-0283

Your mileage may vary slightly based on the time of year and whether you are on daylight savings time or not.

If you look at the top of this forum and click options, you can actually set the timezone to anything you like.

If you set it to Pacific Time - posting times will show in that zone :)