UTC+09:00 is an identifier for a time offset from UTC of +09:00.. Also known as Eastern Indonesian Time.. During the Japanese occupations of British Borneo, Burma, Hong Kong, Dutch East Indies, Malaya, Philippines, Singapore, and French Indochina, it was used as a common time with Tokyo until the fall of the Empire of Japan
Samalga Island, at longitude 169°12′W, is the westernmost area of Alaska that observes UTC−09:00, but is far west of the theoretical zone limits (−142.5° to −127.5° longitude). Its position equates to a mean solar time of UTC−11:17 .
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Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean solar time at 0° longitude, and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time. The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, Standard-Frequency and Time-Signal Emissions, in 1963, but the...
The official abbreviation for Coordinated Universal Time is UTC. This abbreviation comes as a result of the International Telecommunication Union and the International Astronomical Union wanting to use the same abbreviation in all languages. English speakers originally proposed CUT, while French speakers proposed TUC. The compromise that emerged was UTC, which conforms to the pattern for the abbreviations of the variants of Universal Time.
Time zones around the world are expressed using positive or negative offsets from UTC, as in the list of time zones by UTC offset. The westernmost time zone uses UTC−12, being twelve hours behind UTC; the easternmost time zone uses UTC+14, being fourteen hours ahead of UTC. In 1995, the island nation of Kiribati moved those of its atolls in the Line Islands from UTC−10 to UTC+14 so that Kiribati would all be on the same day. UTC is used in many Internet and World Wide Web standards. The ...
UTC divides time into days, hours, minutes and seconds. Days are conventionally identified using the Gregorian calendar, but Julian day numbers can also be used. Each day contains 24 hours and each hour contains 60 minutes. The number of seconds in a minute is usually 60, but with an occasional leap second, it may be 61 or 59 instead. Thus, in the UTC time scale, the second and all smaller time units are of constant duration, but the minute and all larger time units are of variable duration. Dec
The Scottish-Canadian engineer Sir Sandford Fleming promoted worldwide standard time zones, a prime meridian, and the use of the 24-hour clock as key elements in communicating the accurate time. He referred to the resulting system as Cosmic Time. At the 1884 International Meridian Conference held in Washington, D.C., the local mean solar time at the Royal Observatory, Greenwich in England was chosen to define the Universal day, counted from 0 hours at mean midnight. This agreed with civil Greenw
Earth's rotational speed is very slowly decreasing because of tidal deceleration; this increases the length of the mean solar day. The length of the SI second was calibrated on the basis of the second of ephemeris time and can now be seen to have a relationship with the mean solar day observed between 1750 and 1892, analysed by Simon Newcomb. As a result, the SI second is close to 1/86400 of a mean solar day in the mid‑19th century. In earlier centuries, the mean solar day was shorter ...
台湾でも過去に何度か夏時間（+9）を行っている 。 香港では1941年から1979年までの間のほとんどにおいて夏時間（+9）を行っていた（1977・1978年は実施せず）。日本占領の数年間（1942-1945年）は通年+9 で、香港時間は日本本土時間と一致していた。
UTC−04:00 — Puerto Rico, the U.S. Virgin Islands UTC+10:00 — Guam and the Northern Mariana Islands UTC+12:00 (unofficial) — Wake Island: Time in the United States Antarctica: 9: UTC−03:00 — Palmer Station, Rothera Station UTC±00:00 — Troll Station UTC+03:00 — Syowa Station UTC+05:00 — Mawson StationSovereign stateNo. of time zonesTime zoneNotes12 (13)UTC−10:00 — Society Islands, Tuamot ...11UTC+02:00 ( Kaliningrad Time) � ...11UTC−12:00 (unofficial) — Baker Island ...9UTC−03:00 ( ART) — Palmer Stati ...
This is a list of U.S. states (and the one federal district, Washington, D.C.) and territories showing their time zones.. Most of the United States uses Daylight Saving Time (DST) in the summer.
Na západní polokouli je čas oproti UTC posunut zpět (např. v New Yorku, USA platí časové pásmo UTC−5), na východní polokouli platí čas, který je před UTC (např. v Tokiu, Japonsko je časové pásmo UTC+9).
utc-9: 藍-12月前後に適用、橙-6月前後に適用、濃黄-通年適用、水色-海域 UTC-9 とは、 協定世界時 を9時間遅らせた 標準時 である。 目次
UTC+09:00 is an identifier for a time offset frae UTC o +09:00. In ISO 8601 the associatit time wad be written as 2021-05-03T17:07:47 +09:00 . Table o contents
- 127.5 degrees E
- 142.5 degrees E
- 135 degrees E