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System that allows ships on sea to express their local time
Nautical time is a maritime time standard established in the 1920s to allow ships on high seas to coordinate their local time with other ships, consistent with a long nautical tradition of accurate celestial navigation. Nautical time divides the globe into 24 nautical time zones with hourly clock offsets, spaced at 15 degrees by longitudinal coordinate, with no political deviation.
Nautical timekeeping dates back to the early 20th century as a standard way to keep time at sea, although it largely only applied to military fleets pre–World War 2. This time-keeping method is only used for radio communications and to account for slight inaccuracies that using Greenwich Mean Time (GMT) may lead to during navigation of the high seas. It is typically only used for trans-oceanic travel, as captains will often not change the timekeeping for short distances such as channels or inland seas.[1]
^"Nautical time zones | World-Timezone.com". www.world-timezone.com. 19 June 2013. Retrieved 2019-04-17.
consistent with a long nautical tradition of accurate celestial navigation. Nauticaltime divides the globe into 24 nauticaltime zones with hourly clock...
the terrestrial time zone system, nauticaltime zones consist of gores of 15° offset from GMT by a whole number of hours. A nautical date line follows...
after the offset is that used in nauticaltime, with which the UTC offset section overlaps at least partially. Nauticaltime strictly partitions the globe...
UTC offsets). The time zone using UTC is sometimes denoted UTC±00:00 or by the letter Z—a reference to the equivalent nauticaltime zone (GMT), which...
outside the time zones defined by 15 U.S.C. §260 and exist in waters defined by nauticaltime. In practice, military crews may simply use Zulu time (UTC±00:00)...
longitude, as used for example under the nauticaltime system. The world could in theory be divided into 24 time zones, each of 15 degrees of longitude...
its realizations Nauticaltime Sidereal time Ramirez-Simon, Diana (2024-04-03). "Moon Standard Time? Nasa to create lunar-centric time reference system"...
twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon). Civil twilight is the time when the geometric center...
directly to the time instead of "Z" suffix above; other nauticaltime zone letters are not used. The offset is applied to UTC to get the civil time in the designated...
date at the time of printing. Nautical charts are based on hydrographic surveys and bathymetric surveys. As surveying is laborious and time-consuming,...
A nautical almanac is a publication describing the positions of a selection of celestial bodies for the purpose of enabling navigators to use celestial...
with their time zones, which do reflect the most recent IDL shifts. This approach is consistent with the principle of national and nauticaltime zones: the...
The Nautical Almanac has been the familiar name for a series of official British almanacs published under various titles since the first issue of The Nautical...
Nautical tourism, also called water tourism, is tourism that combines sailing and boating with vacation and holiday activities. It can be travelling from...
Nautical publications is a technical term used in maritime circles describing a set of publications, either published by national governments or by commercial...
Hawaii time, which was then 10.5 hours behind UTC. Since it is uninhabited the island's time zone is unspecified, but it lies within a nauticaltime zone...
questioned. Time quoted is simply local time (calculated at noon), the date recorded is a little more confusing. Cook recorded nauticaltime (the day starts...
data with a nautical almanac and sight reduction tables to determine positions. Accurate time information is also needed. After nautical dusk, navigation...
Nautical fiction, frequently also naval fiction, sea fiction, naval adventure fiction or maritime fiction, is a genre of literature with a setting on or...
The Nautical Magazine was a monthly magazine containing articles of general interest to seafarers. The magazine was first published in 1832 by Simpkin...
nautical dusk, the Sun moves to 12° below the horizon in the evening. It marks the end of nautical twilight, which begins at civil dusk. At this time...
nation's standard time, but would revert to nautical standard time upon leaving its territorial waters." Per: Time zone#Nauticaltime zones. Kemp (1999)...
ringing bells over the PA system and announcing the nauticaltime, translating it to standard time in keeping with the marine theme of the park. The pre-show...
The Philippine Nautical Highway System, also the Road Roll-on/Roll-off Terminal System (RRTS) or simply the RoRo System, is an integrated network of highway...
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