Iran is observing the thirtieth anniversary of the country's Islamic revolution with a ten-day celebration that began last Saturday.

VOA: special.2009.02.07

This month is the two hundredth anniversary of the birth of one of the most influential thinkers in science history.

VOA: special.2009.02.25

September fifteenth was chosen as the starting date because it is the anniversary of independence for five Latin American countries.

VOA: special.2009.09.18

This year also marks the four hundredth anniversary of the first recorded astronomical observations with a telescope by Galileo.

VOA: special.2009.10.27

Here is the Yonder Mountain String Band at the thirtieth anniversary of the Telluride Bluegrass Festival six years ago.

VOA: special.2009.06.08

At the end of September two thousand eight, the park celebrated the one hundred fiftieth anniversary of the Butterfield Overland Mail.

VOA: special.2010.04.26

Jim Lovell talked about the current situation at NASA during an event to mark the fortieth anniversary of Apollo Thirteen.

VOA: special.2010.04.28

But first, a report on the anniversary of the Greensboro sit-in and the opening of a civil rights museum to honor it.

VOA: special.2010.01.29

On Monday,the anniversary of the Lehman collapse, President Obama renewed his call for reform of financial supervision.

VOA: special.2009.09.18

Last month,the Harpers Ferry National Historical Park and other partners held many programs observing the one hundred fiftieth anniversary of John Brown's raid.

VOA: special.2009.11.06

The celebration also marks the eightieth anniversary of Congress' declaring "The Star-Spangled Banner" as the national anthem.

VOA: special.2011.03.07

Iran launched its first satellite into orbit in February -- the thirtieth anniversary of the Islamic revolution.

VOA: special.2009.05.23

Next week is the one hundredth anniversary of the Paris Air Show, the biggest in the world.

VOA: special.2009.06.13

November twenty-fourth marked the one hundred fiftieth anniversary of one of the most influential books ever written.

VOA: special.2009.12.01

She sang the song to celebrate Armistice Day, the anniversary of the end of World War One.

VOA: special.2009.12.20

But first,a report on a town marking the one hundred fiftieth anniversary of an anti-slavery rebellion.

VOA: special.2009.11.06

They celebrated the twentieth anniversary of the fall of the Berlin Wall in a peaceful revolution.

VOA: special.2009.11.14

The announcement came the same week as the eighth anniversary of the war in Afghanistan.

VOA: special.2009.10.10

Both shows mark the thirtieth anniversary of the first official report about the disease AIDS.

VOA: special.2011.06.15

Her class at Smith College was to gather for the fifteenth anniversary of the graduation.

VOA: special.2009.10.18

This year,Junior Achievement marks its ninetieth anniversary of educating young people about business and economics.

VOA: special.2009.11.27

The National Geographic Society published her book just in time for the two hundredth anniversary of Charles Darwin's birth on February twelfth, eighteen oh nine.

VOA: special.2009.02.27

The day marked the fiftieth anniversary of American women gaining the right to vote.

VOA: special.2009.10.18

"Elvis! His Groundbreaking, Hip-Shaking,Newsmaking Story" marks the seventy-fifth anniversary of Elvis Presley's birth year.

VOA: special.2010.04.02