![]() It is used for international coordination because with UTC there is no risk of confusion about the various time zones. UTC is the time standard used in clocks around the world. As some marketing content is seasonal, be sure to keep in mind that spring in the Northern Hemisphere begins in March, while March marks the start of autumn in the Southern Hemisphere. These clock adjustments are made in the spring and fall, usually from mid-to-late-March and late-October to early November. Each country determines its specific time change procedures. Twice a year, you'll need to factor in Daylight Saving Time (DST), in which many countries adjust their clocks. In this case, you'll need to convert Eastern Time (ET) for New York to Central European Time (CET) for Paris. For instance, you may be planning your email marketing and communication campaigns from your office in New York, while your target audiences are in Paris. 24-Hour Clock Time Conversion TableĪnother time-related aspect to stay on top of is time zones. Here's a handy table to help you easily convert AM and PM times to a 24-hour clock time format. As a refresher, the United States uses an AM and PM format, whereas the 24-hour clock, sometimes referred to as military time, is more commonly used in Europe. Naturally, there are differences to consider from one country and culture to another, and one of the most practical ones is the timing of your communications. Here are some helpful resources to avoid confusion and get your best results. Today, Greenwich Mean Time (GMT) is only the name of a time zone that is used by a few countries in Africa and Western Europe, including the UK during winter and all year in Iceland.Communicating with audiences around the globe presents both an exciting opportunity as well as some unique challenges and considerations. Since then, GMT is no longer a time standard. Until 1972, Greenwich Mean Time (also known as Zulu time) was the same as Universal Time (UT). UTC was adjusted several times until 1972, when leap seconds were introduced to keep UTC in line with the Earth's rotation, which is not entirely even, and less exact than atomic clocks. The name Coordinated Universal Time was officially adopted in 1967. In 1960, the International Radio Consultative Committee formalized the concept of UTC, and it was put into practice the year after. ![]() The transit circle is a part of the telescope's mechanics and it is still cited as the prime meridian's original reference (0° longitude). The reference line or starting point, the Prime Meridian, was determined to be the transit circle at the Royal Observatory in Greenwich, London. This is the basis for the 24-hour time zone system we know today.Īt the time, Greenwich Mean Time (GMT) was chosen as the world’s time standard. Universal Time (UT) was created at the International Meridian Conference in 1884. It is used to compare the pace provided by TAI with the actual length of a day on Earth. Universal Time (UT1): Also known as astronomical time or solar time, it refers to the Earth's rotation. ![]()
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