Coptic Orthodox Christians celebrate Christmas on 7 January ( Gregorian Calendar ), which coincides with 25 December according to the Julian Calendar.

The Eastern Orthodox Church and the Eastern Catholic Churches celebrate two feast days in honor of Gregory: January 25 as his primary feast and January 30, known as the feast of the Three Great Hierarchs, which commemorates him along with John Chrysoston and Basil of Caesarea.

Governor Muñoz Marín inaugurated the new status called Estado Libre Asociado — or Free Associated State in English — and raised the Puerto Rican flag along with the national anthem of Puerto Rico for the first time on July 25, 1952 — date in which Puerto Ricans celebrate the Constitution of Puerto Rico ( see also: Holidays in Puerto Rico ).

* June 6 – 9 – Jubilee celebrations are held in the United Kingdom to celebrate 25 years of Elizabeth II's reign.

To celebrate 25 years of their musical existence Psyche interpreted Joy Division's " Disorder " in a brand new style as an example of what to expect on their forthcoming album.

Three new specials were announced to celebrate the show's 20th anniversary with the first special ' Surprising guests ' airing on 25 December 2011.

The 25 December Nativity of Christ was attested very early by Hippolytus of Rome ( 170 – 236 ) in his Commentary on Daniel 4: 23: “ The first coming of our Lord, that in the flesh, in which he was born at Bethlehem, took place eight days before the calends of January, a Wednesday, in the forty-second year of the reign of Augustus, 5500 years from Adam .” Another early source is Theophilus Bishop of Caesarea ( 115-181 ):" We ought to celebrate the birth-day of our Lord on what day soever the 25th of December shall happen.

In 274, Emperor Aurelian had declared a civil holiday on 25 December ( the " Festival of the birth of the Unconquered Sun ") to celebrate the deity Sol Invictus.

This is the reason why Old-Calendrists ( using the Julian and Coptic calendars ) presently celebrate Christmas on 7 January, 13 days after the New-Calendrists ( using the Gregorian calendar ), who celebrate Christmas on 25 December.

* Ultima Online: 7th Anniversary ( 25 September 2004 ) was a special release of the game to celebrate Ultima Online's seventh birthday.

For almost 25 years, Cleveland Bishop Anthony Pilla participated in the parade and Mass to celebrate his Italian heritage.

The Burns Howff Club was formed in the Globe Inn, Dumfries, South West Scotland in 1889, and meets on 25 January each year to celebrate the anniversary of the birth of Robert Burns in 1759 with a Burns Supper.

are the 22 bronze life size figures that command and celebrate a superb view of South Shields Harbour and the Tyne Piers .| Coor dms | 55 | 0 | 21. 3 | N | 1 | 25 | 33. 5 | W

Christians celebrate the conception of Jesus on 25 March ( Lady Day ) and his birth at Christmas ( 25 December ) or Epiphany ( 6 January ).

There has been debate about the reason why Christians came to choose the 25 December date to celebrate the birth of Jesus.

In Romania, spouses celebrate their silver wedding anniversary ( 25 years of marriage ) by exchanging silver wedding rings, which are worn on the 4th finger of the left hand along with the original ( usually gold ) wedding ring.

Burke was joined by a host of top country stars and backed by Buddy Miller and his band at the Belcourt Theatre in Nashville, Tennessee on September 25, 2006 for a one-off concert to celebrate the release of Nashville.

Jeanne Antoinette was invited to a royal masked ball at the Palace of Versailles on the night of 25 to 26 February 1745, one of the many fêtes given to celebrate the marriage of the Dauphin Louis de France ( 1729 – 65 ) to the Infanta Maria Teresa of Spain ( 1726 – 46 ).

Yazoo reformed in 2008 for a series of live dates to celebrate 25 years since the duo's split.

The completion of sixty years service with the FR by Robert Evans ( for almost 25 years as Manager ) was marked on 6 November 1954 and a special train was run ( with difficulty ) from Minffordd to Porthmadog to celebrate the occasion and convey Mr Evans, his wife, Alan Pegler ( Company Chairman ) and guests en route to a clock presentation ceremony.

View north up Regent Street on 25 April 2011, with Union Flag s hung to celebrate the Wedding of Prince William, Duke of Cambridge, and Catherine Middleton | wedding of Prince William and Kate Middleton

On Christmas Day December 25, 1989, the American conductor Leonard Bernstein shared with East and West Berliners and the world his Berlin Celebration Concert in order to celebrate the Fall of the Berlin Wall.

He can also be quite resourceful-he appears to support himself by selling handmade wooden buggies and pilfering food from sympathetic local shops, or convoluted schemes to create sudden crowds in order to celebrate his birthday on October 25 ( which also happens to be Maurice Dodd's Birthday ).

In 1908, a Jubilee Australasian Football Carnival was held to celebrate 50 years of Australian Football.

In non-leap years, some leaplings celebrate their birthday on either February 28 or March 1, while others only observe birthdays on the authentic intercalary dates.

Patch worn by Red Sox to celebrate 100 years at Fenway Park

In November 2003, to celebrate UEFA's Jubilee, he was selected as the Golden Player of Romania by the Romanian Football Federation as their most outstanding player of the past 50 years.

His suicide, according to a poll organized to celebrate fifty years of Dutch popular music, was the most significant event in its history.

They were all mayors of Haarlem and their names were Anthony van Styrum ( 1679-1756 ), who also served in the admiralty of Amsterdam, Pieter van der Camer ( 1666-1747 ), who commissioned his own commemorative medal to celebrate 50 years in the service of the vroedschap of Haarlem in 1743, Jan van Dyck, and Cornelis Ascanius van Sypesteyn ( 1694-1744 ), who himself was a collector of medals and who lived at Brederode.

In March 1977, the Australian Cricket Board assembled 218 of the surviving 224 Australia-England players for a Test match to celebrate 100 years of Test cricket between the two nations.

In February and March 1985 the Benson & Hedges World Championship of Cricket was played at the MCG, a One Day International tournament involving all of the then Test match playing countries to celebrate 150 years of the Australian state of Victoria.

In 2001, to celebrate 100 years as " Manchester United ", a reversible white / gold away kit was released, although the actual match day shirts were not reversible.

This was most recently the case during the 2008 – 09 season, to celebrate 40 years since it was worn for the club's first European Cup win in 1968.

A Test match to celebrate 100 years of Test cricket was held in Melbourne from 12 to 17 March 1977.

Every five years since the Walkman personal stereo was born in 1979 until 1999, Sony would celebrate by coming out with an anniversary cassette model on July 1.

* Summer – Belisarius arrives in Constantinople and is permitted by emperor Justinian I to celebrate a triumph, the first non-imperial triumph for over 500 years.

In October 2010 Williams released his second greatest hits album, In and Out of Consciousness: The Greatest Hits 1990 – 2010, to celebrate 20 years as a performing artist.

In 2001 he was named as centre half-forward and captain of North Melbourne's Team of the Century and in 2008 was named as Australian football's greatest ever player as part of a list of the top 50 players of all time, published in the book The Australian Game of Football, which was released by the League to celebrate 150 years of Australian rules football.

Since the date of Easter is calculated differently in the East and West ( see Easter controversy ), in most years the two traditions celebrate Pentecost on different days ( though in some years the celebrations will coincide, as in 2010 and 2011 ).

In September 2005, several hundred surfers gathered in Newnham on Severn to celebrate 50 years since the first recorded attempt at surfing the Severn bore and to view the première of Longwave by Donny Wright, a historical film documenting the evolution of the sport since its inception in 1955.

In November 2003, to celebrate UEFA's 50th anniversary, the German Football Association selected him as its Golden Player of the past 50 years ( from 1954 to 2003 ).

To celebrate the 75th anniversary of the stadium ( and the 100th anniversary of Derby's team ) the Belgian state released a commemorative coin: the 10 euro 75 years of Heysel Stadium commemorative coin.

Commissioned to celebrate 50 years of the city of Melbourne, it was displayed in the Melbourne Exhibition Building for nearly 30 years before being taken into storage.

* Birthday is a day to celebrate that the person has lived a certain number of years.