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.
If you're tired winter's dark afternoons, hold on just a little while longer. Daylight saving time 2017 will start on March 12 at 2 a.m. On March 11 before you go to bed, you'll need to set your clocks - assuming your digital time keepers don't handle it on their own - ahead by an hour. The switch means sunrise and sunset are about an hour later on March 12 than the day before, putting more daylight hours in the afternoon.