Historical timeline for November 27

Syrian rebel groups led by Hay'at Tahrir al-Sham launch a ground offensive into Syria.

Days after the announcement of its discovery, the Utah monolith is removed by recreationists.

Iran's top nuclear scientist, Mohsen Fakhrizadeh, is assassinated near Tehran.

An active shooter inside a Planned Parenthood facility in Colorado Springs, Colorado, shoots at least four police officers. One officer later dies. Two civilians are also killed, and six injured. The shooter later surrendered.

Nevsky Express bombing: A bomb explodes on the Nevsky Express train between Moscow and Saint Petersburg, derailing it and causing 28 deaths and 96 injuries.

XL Airways Germany Flight 888T: An Airbus A320 performing a flight test crashes near the French commune of Canet-en-Roussillon, killing all seven people on board.

The House of Commons of Canada approves a motion introduced by Prime Minister Stephen Harper recognizing the Québécois as a nation within Canada.

Blackwater 61 crash: A CASA C-212 Aviocar crashes into the Koh-i-Baba mountain range in Afghanistan, killing six.

Pope John Paul II returns the relics of Saint John Chrysostom to the Eastern Orthodox Church.

A hydrogen atmosphere is discovered on the extrasolar planet Osiris by the Hubble Space Telescope, the first atmosphere detected on an extrasolar planet.

The centre-left Labour Party takes control of the New Zealand government with leader Helen Clark becoming the first elected female prime minister in New Zealand's history.

Twenty-five people are killed in the second Souhane massacre in Algeria.

For the second time in a year, military forces try to overthrow president Carlos Andrés Pérez in Venezuela.

Avianca Flight 203: A Boeing 727 explodes in mid-air over Colombia, killing all 107 people on board and three people on the ground. The Medellín Cartel claimed responsibility for the attack.

Space Shuttle program: Atlantis launches on STS-61-B, with Rodolfo Neri Vela becoming the first Mexican astronaut.

Under the Brussels Agreement signed between the governments of the United Kingdom and Spain, the former agrees to enter into discussions with Spain over Gibraltar, including sovereignty.

Avianca Flight 011: A Boeing 747 crashes near Madrid's Barajas Airport, killing 181.

In San Francisco, city mayor George Moscone and openly gay city supervisor Harvey Milk are assassinated by former supervisor Dan White.

The Kurdistan Workers' Party (PKK) is founded in the Turkish village of Fis.

The Provisional IRA assassinates Ross McWhirter, after a press conference in which McWhirter had announced a reward for the capture of those responsible for multiple bombings and shootings across England.