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