even ozone, to form a wide variety of toxic products, some of which may cause biological mutations. Examples of these chemicals include the nitrate radical, nitroarenes, and nitrosamines. Visibility Impairment - Nitrate particles and nitrogen dioxide can block the transmission
In the U.S., the clocks will be turned back one hour on Nov. 2, at 2:00 a.m. local time, so trick-or-treaters will hang on to a little more light on Halloween. (Mark your calendar, we âspring aheadâ an hour on the second Sunday in March.). If you live in Europe, you will have already moved your clock back to Standard Time on Sunday, Oct. 26, in the wee hours of the morning (it varies by country), in Asia, most countries do not observe Daylight Saving.
View full size image. Few people will likely wake up exactly at 2:00 a.m. local time to move the clock hand, or dial, forward an hour. But that's when daylight saving time officially begins on the second Sunday in March. It ends on the first Sunday in November, when clocks are turned back at 2:00 a.m. local time to read 1:00 a.m. That is, for everyone except those who live in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, and by most of Arizona, with the exception of the Navajo Nation.