Found few more pages (in Russian) about Mongolia won't observe Summer Time (DST) in 2007. Read my translation below: 02/08/2006, Mongolia - "Mongolia won't observe Summer Time (DST)" from Embassy of Mongolia in the Russian Federation and MONTSAME - NEWS AGENCY. February 8, 2007 GOVERNMENT MEETING At a recent meeting of The Cabinet Ministry, it was decided to annul the 93rd decree which calls for the transition to Summer Time (DST). According to government regulations from 1983, 1986, and 2001, each year the clock advanced one hour earlier during the summer. The government press service reported that due to economic circumstances of the country, the market economy, the energy industry, and citing the adverse impact on human health, the government has chosen not to move to Summer Time (Daylight Saving Time). http://www.worldtimezone.com/dst_news/dst_news_mongolia01.html