Time zones are a social construct. They don’t exist in any real sense, but are convenient for coordinating activities in regions where noon occurs at about the same time (that is, the sun is highest in the sky at about the same time). Standardized time zones occur in multiples of hours (with the occasional 30 or 45 minute difference) from Greenwich Mean Time also known by its official name, Coordinated Universal Time (aka UTC). Time zones are usually notated as UTC+d where d is the time difference between the time zone and UTC. For instance, UTC+0:00 contains Liberia, Ghana, Greenland, Portugal, Iceland, Ireland and the UK, UTC+3:30 contains Iran, UTC+4:30 contains Afghanistan, UTC+8:45 contains part of Western Australia, and UTC+12:00 contains New Zealand. UTC+D means that a location is D hours ahead of UTC, while UTC-D means that the location is D hours behind UTC. For instance, Brazil, Argentina and Suriname are in UTC-3:00, United States Eastern Time is UTC-5:00, United States Pacific Time is UTC-8:00 and the outlying Baker Island is in UTC-12:00.
Tag Archives: iran
Okay, it’s past midnight where I am, so I’ll post this now and have something else for you all later today.
Since the first nuclear test in 1945 at the White Sands Missile Range, then White Sands Proving Ground, there have been around 2000-2100 nuclear detonations in either the form tests or use as a weapon. Of these about 1000 are American, 700 are Soviet/Russian, 200 are French, 45 are British, 45 are Chinese, 6 are Indian, 6 are Pakistani, and two are North Korean. Unconfirmed tests include Iranian, German and Japanese devices. The three most prolific testing years were, in order of most tests to least, 1961, 1958 and 1968. About 140 nuclear tests occurred in 1961, with about 100 of those being American. The longest period of time between two nuclear tests was a span of about 100 months from June 1998 to October 2006. Since 1998, the only nation to perform confirmed nuclear tests has been North Korea. The “Doomsday Clock” is a subjective measure of the danger of nuclear catastrophe based on current events. Initially set at 11:53, the closest the Doomsday Clock has gotten to midnight (global nuclear disaster) was 11:53 in 1953. The farthest the Doomsday Clock has been from midnight was in 1991 when the clock was set to 11:43. The Doomsday Clock is currently set to 11:55