Canada's communications regulator is allowing hams to use special prefixes between May 15 and July 14 in honor of Queen Elizabeth II's Platinum Jubilee, marking he 70 years on the throne.
The ARRL Letter reports that all hams in Canada may choose to use the special prefixes. They include VG, VX, XK and XJ. In addition, the Canadian government's special event station listing shows two specific Jubilee-related special event operations planned, with call signs XM3A and VB3Q70.