Certain colors and dyeing techniques have been used since the Asuka period, while others had been developed as late as the Meiji period when synthetic dyes became common. Note that due to the long history of use of this color system, some variations in color and names do exist. Many of the names of these colors originate from Chinese, where the hierarchical color system is even more complex. ãããããªã. Shogakukan and Yahoo Japan Corporation.
The Federal law was amended in 1986 to begin Daylight Saving Time on the first Sunday in April. Under legislation enacted in 1986, Daylight Saving Time in the U.S. began at 2:00 a.m. on the first Sunday of April and ended at 2:00 a.m. on the last Sunday of October.n 1917, Australia and Newfoundland began saving daylight. The plan was not formally adopted in the U.S. until 1918. ' An Act to preserve daylight and provide standard time for the United States ' was enacted on March 19, 1918.
The Uniform Time Act of 1966 provided standardization in the dates of beginning and end of daylight time in the U.S. but allowed for local exemptions from its observance. The act provided that daylight time begin on the last Sunday in April and end on the last Sunday in October, with the changeover to occur at 2 a.m. local time. During the energy crisis years, Congress enacted earlier starting dates for daylight time. In 1974, daylight time began on 6 January and in 1975 it began on 23 February. After those two years the starting date reverted to the last Sunday in April. In 1986, a law was passed that shifted the starting date of daylight time to the first Sunday in April, beginning in 1987.