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.
You set your clock forward in the spring when DST starts (= lose one hour), and back one hour when DST ends in the fall (= regain one hour). USA, Central America, Canada, Europe, Asia, northern Africa. Many countries in the Northern Hemisphere (north of the Equator) use DST in the summer time, but not all. Daylight Saving Time usually starts in March-April and ends in September-November when the countries return to standard time.