World Time Clock & Map. About World Time Clock & Map. Flash Map of World Time displays current local time in any place around the world right now. World Time Clock & Map is an indispensable utility for everyone who deals with. This advanced Flash application is very helpful for travelers who need.
Just click on “Settings” button on the top- right of the map and discover how you can customize the map yourself! New features like the ability to add more clocks and set alarm time were added recently and general usability was improved. Since January 1, 1. International Atomic Time (TAI) with an exact offset of an integer number of seconds, changing only when a leap second is added to keep clock time synchronized with the rotation of the Earth. Greenwich Mean Time (GMT) is an older standard, adopted starting with British railroads in 1.
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Using telescopes instead of atomic clocks, GMT was calibrated to the mean solar time at the Royal Observatory, Greenwich in the UK. Universal Time (UT) is the modern term for the international telescope- based system, adopted to replace . Observations at the Greenwich Observatory itself ceased in 1. Because the rotational period of Earth is not perfectly constant, the duration of a second would vary if calibrated to a telescope- based standard like GMT or UT - in which a second was defined as a fraction of a day or year.
Most time zones are exactly one hour apart, and by convention compute their local time as an offset from UTC or GMT. In many locations these offsets vary twice yearly due to daylight saving time transitions. A time zone is a region on Earth, more or less bounded by lines of longitude, that has a uniform, legally mandated standard time, usually referred to as the local time. By convention, the 2. Earth compute their local time as an offset from UTC, each time zone boundary being ostensibly 1.
The reference point for UTC is the Greenwich Meridian (the Prime Meridian), which has a longitude of 0. Local time is UTC plus the current time zone offset for the location in question.
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A corresponding one hour decrease relative to UTC occurs every 1. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. In a typical case where a one- hour shift occurs at 0. DST and that day has 2.
DST to 0. 1: 0. 0 standard time, repeating that hour, and that day has 2. A digital display of local time does not read 0. In this example, a location observing UTC+2 during standard time is at UTC+3 during DST; conversely, a location at UTC. Clock shifts are usually scheduled near a weekend midnight to lessen disruption to weekday schedules. Space Time. In space, light and time act differently than here on Earth, and speed is a different concept when time can theoretically be stopped in its tracks.
The speed of light is 1. Nothing in the universe travels faster than light: at the speed of light, time stops. No matter how fast you are moving when you observe it, the speed of light will always be 1. In physics, the three dimensions of space and the fourth, separate dimension of time combine to form a single construct throughout the cosmos called space- time. Using space- time, scientists can measure both the place and time something occurs in one.
Time is relative to the person observing it and time may change depending on how fast the observer is moving.