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Cs Atomic Clock- National Standard of Time and Frequency
Dissemination of Standard Time
According to the Measurement Units, Standards and Services
Act, No: 35 of 1995 of the Democratic Socialist Republic of Sri Lanka, The
National Standards of Time & Frequency are maintained by the National
Measurement Laboratory of Measurement Units Standards And Services Department.
Standard time of Sri Lanka is 5 hours 30 minutes in advance
of Coordinated Universal Time. (UTC)
“Coordinated Universal Time (UTC) means the time determined
by the International Bureau of Weights and Measures and maintained in Sri Lanka
under the section 6 of the Measurement Units, Standards and Services Act No.35
of 1995.
Coordinated Universal Time (UTC) is an international time
scale recommended by the International Bureau of Weights and Measures (BIPM) as
the legal basis for time. It is a method of measuring time using atomic clocks.
To determine the international standard of Coordinated Universal Time, the
Bureau of Weights and Measures (BIPM) in Paris Coordinates data from atomic
clocks located in timing laboratories around the globe.
Greenwich Mean Time, which is based on astronomical
observations, is an average (mean) because the actual time taken for the Earth’s
rotation varies slightly from day to day. Measurements taken by atomic clocks
vary far less. The difference between Greenwich Mean Time and Coordinated
Universal Time is measured in fractions of a second. The difference is
important, however, in some scientific matters.
For example, it is relevant in computer programmes that use
high speed data transfers and in universal synchronization matters. It is also
the basis of the satellite global positioning system (GPS).
MUSSD plans
to offers Time
transmission via the Internet through public NTP (Net work Time Protocol)
Server .
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