Carbon Dioxide is a colorless gas with a slightly pungent odor and biting taste. It will not burn, support combustion or sustain life. It is about 1.5 times heavier than air. Normally stored as a liquid, carbon dioxide exists only as a solid or gas at room conditions. The solid CO2 snow transforms (sublimes) directly to a gas without passing through the liquid phase. The Compressed Gas Association (CGA) specification G-6.2, Grade H is considered standard for commercial carbon dioxide.
USA and Canada past and future DST schedules here. California is in the Pacific Time Zone in the United States of America (USA). US Pacific Standard Time ( PST ) is 8 hours behind Greenwich Mean Time ( GMT-8 ). Like most states in the USA, Daylight-Saving Time ( DST) is observed in California , where the time is shifted forward by 1 hour to Pacific Daylight Time ( PDT ); which is 7 hours behind Greenwich Mean Time ( GMT-7 ).
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight saving time, its time offset is UTCâ7 and is thus based on the mean solar time of the 105th meridian west of the Greenwich Observatory. In the United States and Canada, this time zone is generically called the Pacific Time Zone (PT). Specifically, it uses Pacific Standard Time (PST) when observing standard time (late autumn to early spring), and Pacific Daylight Time (PDT) when observing daylight saving time (early spring to late autumn).