SMSCC events use WWV to set clocks to Coordinated Universal Time
(formerly known as Greenwich Mean Time), with the hour adjusted to local time.

Time dot Gov

Atomic Time dot Net

The following are amusing to watch but they are only as accurate as your computer's clock.

Magic Clock     Nude Men Clock

                (Note: There may be a noticeable delay when calling from a cell phone)
WWV - National Institute of Standards and Technology - (303) 499-7111 - Fort Collins, CO

                (Note: There may be a charge for calling numbers outside the continental U.S.)
WWVH - NIST - (808) 335-4363 - Kekaha (Kauai), HI
CHU - National Research Council of Canada - (613) 745-1576 (English) - Ottawa, Ontario
CHU - Conseil national de recherches du Canada - (613) 745-9426 (Français) - Ottawa, Ontario