Exact time now, time zone, time difference, sunrise/sunset time and key facts for GMT Greenwich Mean Time [ˌgrenɪtʃ ˈmiːn taim; -ɪdʒ] (kurz GMT; englisch für „mittlere UTC−12 | UTC−11 | UTC−10 | UTC− | UTC−9 | UTC−8 | UTC−7 | UTC−6 | UTC−5 | UTC−4 | UTC− | UTC−3 | UTC−2 | UTC−1 | UTC. Conversion between GMT +7 Time and Central European Time, Current Local Times in GMT +7 Time and Central European Time.
Converting GMT to Berlin TimeExact time now, time zone, time difference, sunrise/sunset time and key facts for GMT Uhrzeit jetzt in koordinierter Weltzeit (Coordinated Universal Time, UTC-7). Aktuelle Zeitzone. UTC UTC/GMT -7 Stunden. Keine Sommerzeit im Jahr Mo., 7. Dez. London. Di., 8. Dez. Hong Kong. Di., 8. Dez. Singapore. Di., 8. Dez. São Paulo.
Gmt +7 Tools & Converters Videocnt emsp sug 2020 10 26 at 00 07 GMT 7
Despite being solar time, noon is rarely the moment when the sun crosses the Greenwich meridian. Earth has an uneven speed in both its ecliptic orbit and its axial tilt.
In the past, GMT has been a term with two different meanings. The more specific and conventional meaning is to use midnight as the zero hour of each and count upwards from there.
These are listed below:. This time zone with a zero offset from UTC is observed by Greenland. This time zone has no offset from UTC and is observed by several European countries during the winter.
The WEST time zone is used in the summer. In Africa, Morocco and the Western Sahara use this zone. This military zone has a zero offset from UTC and is used for military purposes in aviation.
The time difference between these two concepts is minimal, but the differences still remain. Instead, countries that participate in the practice move to a new time zone temporarily during the time period.
In its early history, the United Kingdom evolved into a maritime nation, which is any nation that borders the sea and is dependent on it for a majority of the following activities:.
This evolution resulted in British mariners using chronometers set to GMT which they could use to find their longitude from the Greenwich meridian which is the basis for zero degrees longitude.
These chronometers were portable time standards that allowed the mariners to utilize celestial navigation to find their longitude and therefore their location.
The Isle of Man adopted the standard in , Jersey followed in , and Guernsey in This was followed by Ireland in Prior to the use of electronic time signals, the Greenwich Observatory used something called a time ball.
This time ball was a large painted sphere that was dropped at predetermined times to give ship navigators an opportunity to calibrate their chronometers at sea.
Today there are still sixty time balls to be found around the world, though most of them have been decommissioned.
As the United Kingdom developed into an advanced maritime nation , British mariners kept at least one chronometer on GMT to calculate their longitude from the Greenwich meridian, which was considered to have longitude zero degrees, by a convention adopted in the International Meridian Conference of Synchronisation of the chronometer on GMT did not affect shipboard time, which was still solar time.
But this practice, combined with mariners from other nations drawing from Nevil Maskelyne 's method of lunar distances based on observations at Greenwich, led to GMT being used worldwide as a standard time independent of location.
Greenwich Mean Time was adopted across the island of Great Britain by the Railway Clearing House in and by almost all railway companies by the following year, from which the term " railway time " is derived.
It was gradually adopted for other purposes, but a legal case in held " local mean time " to be the official time. For example, our polling booths were opened, say, at 8 13 and closed at 4 13 p.
On 1 January , GMT was superseded as the international civil time standard by Coordinated Universal Time, maintained by an ensemble of atomic clocks around the world.
Universal Time UT , a term introduced in , initially represented mean time at Greenwich determined in the traditional way to accord with the originally defined universal day ; from 1 January as decided by the International Astronomical Union in Dublin in , at the initiative of William Markowitz this "raw" form of UT was re-labelled UT0 and effectively superseded by refined forms UT1 UT0 equalised for the effects of polar wandering  and UT2 UT1 further equalised for annual seasonal variations in Earth rotation rate.
Indeed, even the Greenwich meridian itself is not quite what it used to be—defined by "the centre of the transit instrument at the Observatory at Greenwich".
Although that instrument still survives in working order, it is no longer in use and now the meridian of origin of the world's longitude and time is not strictly defined in material form but from a statistical solution resulting from observations of all time-determination stations which the BIPM takes into account when co-ordinating the world's time signals.
Nevertheless, the line in the old observatory's courtyard today differs no more than a few metres from that imaginary line which is now the prime meridian of the world.
Historically, GMT has been used with two different conventions for numbering hours. The long-standing astronomical convention, dating from the work of Ptolemy , was to refer to noon as zero hours see Julian day.
This contrasted with the civil convention of referring to midnight as zero hours dating from the Roman Empire. The latter convention was adopted on and after 1 January for astronomical purposes, resulting in a discontinuity of 12 hours, or half a day.
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