"Fat" or Shrove Tuesday
First, determine the date for Easter of any given year (which is the first Sunday after the first full moon that follows the Spring Equinox) and then count back 47 days (40 days of Lent plus Holy Week) to find Mardi Gras Day.
Instant time conversion between world locations
How to view local current time differences and GMT offsets
GMT is both a timezone and the reference point for the Prime Meridian
How GMT is being used today?
Uses of GMT go from email time stamp to air travel
Frequently Asked Questions - FAQs
Why is the Navy so involved in time-keeping?
The earliest users of accurate time were the navy
Precision is not optional at sea
What time is it now across the World?
By using your computer's clock, this calculates the time in other time zones all over the world! Useful if you communicate across different time zones for business or leisure.
Types of lunar calendars observed around the world ,
2016 and 2017 dates
Name of Months
Month names inevery major European language
A linguist's calendar
Days of the Week
Official European Union Languages
A multi-lingual Monday to Sunday
What is the difference between the Northern and the Southern Hemisphere
Solstice in the UK
History of Sundials
Time and Cricket
A complex relationship
British Summer Time
British Summer Time (BST) is the UK name for Daylight Saving Time (DST)
BST is GMT+1 from March till October
In tune, on time and in time
Tempo, beats and time signatures in music
What does music teach us about the perception of time?
WHAT IS TIME?
From Intuition to Classical Physics
Measurement of Time Provides Possible Answers
What is the definition of a second?
As the definition of time evolved, so did the second's
Earth Time and Atomic Time have to be 'reconciled'
When did the millennium begin?
This millennium (and century) officially began on: 1 January 2001 GMT
The simple explanation is that our Calendar System began at 1AD. There was no year 0. The calendar we use today goes from 1BC to 1AD.
Royal Observatory Greenwich
From sundials to research on time
What is Oxford Time?
What is the International Atomic Time Scale?
The adjustment between Atomic & Earth Time
The Coordinated Universal Time (or UTC) replaced Greenwich Mean Time (GMT) as the reference time scale derived from The Temps Atomique International (TAI) calculated by the Bureau International des Poids et Mesures (BIPM) in Paris, France using a worldwide network of atomic clocks. UTC differs from TAI by an integer number of seconds; it is the basis of all activities in the world.
Agreeing on a universal Prime Meridian was not an easy affair.
British Summer Time (BST) Dates 1950-2015
When did summer time start/end ?
Check a particular year for BST start and end
From Plot Device to Philosophy : Shakespeare and Time
Measuring Time in the 16th Century
'The Seven Ages of Man' Give Meaning to Each Stage of Life
Did Columbus find longitude?
Columbus twice claimed to have found his longitude by timing lunar eclipses. These claims are probably inaccurate.
The History of Time Zones
Standard Time and Longitudes
24 time zones and many more subdivisions
Measuring Time by Days and Months
Moon Cycles, Solar Years and Seasonal Rhythms
What is the SI unit of time?
Official definition of a second
A.M. and P.M.
Non-abbreviated form: Ante and Post Meridiem
What is Noon and Midnight?
Astrology: Natal Chart
The planets at the moment of your birth
Ephemeris and GMT
Panchang - Indian Astrology
Master your time - master your life
Panchang is a system based on Indian astrology, a spiritual and scientific calendar, with very practical aims.
The International Meridian Conference
Washington DC, USA - October 1884
Extract from one of the middle sessions of the Conference:
The International Meridian Conference, Washington, 1884
The Prime Meridian at Greenwich becomes the point of reference
Why is Greenwich the "centre of time and space"?
New Zealand at Autumn Equinox Time
Light, snow and heat
UTC - Universal Time Coordinated
What is Coordinated Universal Time?
Solstice and Stonehenge
The magic of midsummer in a magical place
The longest day of the year is called the summer solstice in the Northern Hemisphere
Greenwich Time Signal
For 75 years the major global news headlines of the day have been preceded by the six Greenwich Time 'pips'. When the news of Neil Armstrong's first steps on the moon , President John F Kennedy's assassination and the destruction of the Berlin Wall were broadcast across the world on the BBC, they followed the familiar sound of the Greenwich pips.
What is the time in ISO format?
From natural time to clock time
Railway timetables needed same time convention
It's official: we're ruled by time
Time is the most popular common noun in English
We like to be punctual, we expect our trains to run to schedule, and many of us spend our working day watching the clock. Now the new revised eleventh edition of the Concise Oxford English Dictionary can officially confirm that we are indeed ruled by time .
Summer Time and Time Zones
Daylight Saving Time (DST) extends beyond the astronomical summer
Civilian designations relative to GMT
NIST scientists have built a second "quantum logic clock," using quantum information processing techniques on a single ion of aluminium to make a clock that would not gain or lose more than one second in about 3.7 billion years.
GMT Server Time Stamp:
Time Management Part II
Plans exist to be reviewed. The joy of discarding them
Adding new decisions, taking outdated ones off the list
GMT - Greenwich Mean Time
Global Time Zones - What time is it anywhere in the World?
A cross-check table with GMT offsets
Network Time Protocol
NTP is a protocol designed to synchronize the clocks of computers over a network. NTP version 3 is an internet draft standard, formalized in RFC 1305. NTP version 4 is a significant revision of the NTP standard, and is the current development version, but has not been formalized in an RFC. Simple NTP (SNTP) version 4 is described in RFC 2030.
Time is money?
The International Meridian Conference
Washington DC, USA - October 1884
From pages 199 to 204:
A Chinese New Year
The systems that sort out the year
The last millennium would have been celebrated in Greenwich, England on 25 March 1001 AD but it wasn't a thousand years ago because we "lost" 11 days along the way!
All in One: World and Local Clocks
Digital timepieces for real and virtual travel
The World is local, so is the time
It cannot be stored or saved for later. Time can only be managed
We all know the theory of how to use time better, how do we put it in practice?
Why do clocks use IIII instead of IV for 4?
Still a puzzling choice
How is it defined?
Zero or Prime Meridian Time
What time does the time-ball drop at Greenwich?
In 1833 a red "Time Ball" was installed on the roof of the Royal Observatory Greenwich
World Time Zone Map
Map of Global Time Zones
Military & Civilian Time Designations
From Time Zone A - Z
There are 25 integer World Time Zones from -12 through 0 (GMT) to +12. Each one is 15° of Longitude as measured East and West from the Prime Meridian of the World at Greenwich, England. Some countries have adopted non-standard time zones, usually 30 minutes offset which have a * designation.
What is Bristol Time?
The clock with two minute hands, one is GMT
UK Clock Changes and the Anatomy of a Second
GMT, BST, UTC - plus EU legislation
Summer Period - The Full Story