May Day Strike and Mayhem. Eight hours for work, eight hours for rest and eight hours for what you will.. --A slogan of the Eight-hour Day movement. May 1, 1886, was the deadline that unions and other worker organizations set for a national general strike.
On January 31, 2008 the US Navy tested a railgun that fired a shell at 10.64 MJ with a muzzle velocity of 2,520 m/s (8,270 ft/s). Its expected performance is a muzzle velocity over 5,800 m/s (19,000 ft/s), accurate enough to hit a 5-metre (16 ft) target over 200 nmi (370 km) away while firing at 10 shots per minute.
Similarly, the size 285/35ZR19 99Y indicates a maximum speed capability of over 149 mph, while the Y in the service description specifies a maximum speed of 186 mph. The most recent change is to enclose the Y-speed rating indicated in a service description in parentheses, such as 285/35ZR19 (99Y).