No Smoking Day is an annual health awareness day in the United Kingdom that helps smokers that want to quit smoking. The first No Smoking Day was on "Ash Wednesday" in 1984 and it now takes place on the second Wednesday in March. The campaign is now in its 24th year and is a firm fixture in the UK calendar because of its continuing success. On No Smoking Day 2006 1.5 million smokers made a quit attempt and millions more used the Day to take a step towards stopping smoking.

The campaign is run by a charity of the same name, which is based in London and has four full-time staff. The charity is funded by a coalition of governmental and voluntary sector organisations with an interest in health.

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禁止吸烟的一天是一年一度的健康意识在英国帮助吸烟者想戒烟。第一个禁止吸烟是在1984年的“圣灰星期三”,现在发生在第二个星期三3月。活动现在24年,是公司固定在英国日历,因为它持续的成功。禁止吸烟日2006 150万烟民试图戒烟,数百万人使用一天一步戒烟。

这个活动是由同名的一个慈善机构,总部设在伦敦,有四个全职员工。慈善机构是由联合政府和志愿部门组织有兴趣的健康。