Question: Volcano Live was commissioned following the success of a British television programme on astronomy that first broadcast when?

Context paragraphs:
Trainspotting Live: Trainspotting Live was a live television program broadcast on BBC Four over three nights from 11 July 2016.  It followed on from similar "live" programmes on the BBC such as "Airport Live" and "Volcano Live".

Airport Live: Airport Live was a live television programme broadcast on BBC Two over four nights from 17 June 2013.  The show was commissioned following the success of other "live" programmes such as "Volcano Live". The show was presented by Kate Humble, Dan Snow, Anita Rani and Dallas Campbell from Heathrow Airport in London.  Dallas Campbell, Anita Rani and Dan Snow presented segments, which attempted to discover the principles behind Heathrow Airport.  "Airport Live" also featured pre-recorded reports and interviews in addition to the real-time broadcast.  Live cameras showed airport activity from around the airport and online features included the history of the airport site.

Stargazing Live: Stargazing Live is a British live television programme on astronomy that has been broadcast yearly since its first broadcast on BBC Two in January 2011.  The series is primarily presented by scientist Brian Cox and comedian and amateur astronomer Dara Ó Briain with support from TV presenter and biochemist Liz Bonnin and astronomer Mark Thompson.  It is broadcast from Jodrell Bank Observatory and has featured live links from scientific facilities in Hawaii, South Africa, Norway and NASA.

The Angelus (television programme): The Angelus is an Irish radio and television programme first broadcast in 1950.  On radio it is broadcast at 12:00 and 18:00 every day.  On television, it is broadcast at 18:00, immediately before the main evening news.  Since 2009, the programme on television no longer includes Catholic imagery and the Angelus prayer itself is never broadcast.

Picture Page: Picture Page is a British television programme, broadcast by the BBC Television Service (now known as BBC One) from 1936 to 1939, and again after the service's hiatus during the Second World War from 1946 until 1952.  It was the first British television series to become a long-term and regular popular success.

Cathy Come Home: Cathy Come Home is a 1966 BBC television play by Jeremy Sandford, produced by Tony Garnett and directed by Ken Loach, about homelessness.  A 1998 "Radio Times" readers' poll voted it the "best single television drama" and a 2000 industry poll rated it as the second best British television programme ever made.  Filmed in a gritty, realistic drama documentary style, it was first broadcast on 16 November 1966 on BBC1.  The play was shown in the BBC's "The Wednesday Play" anthology strand, which often tackled social issues.

SMTV Live: SMTV Live (an abbreviation of Saturday Morning Television Live), also stylised as SM:tv LIVE, and in early promotional material SMTV://live, is a British Saturday morning children's television programme, first broadcast on ITV on 29 August 1998 and last broadcast on 27 December 2003.

List of Blue Peter presenters: "Blue Peter" is a British children's television programme created by John Hunter Blair.  The first programme was broadcast on 16 October 1958, and the series still airs as of 2017.  It is the longest-running children's television programme in the world, and also one of the longest-running television programmes in the world.  "Blue Peter" currently airs weekly on Thursdays in the United Kingdom on CBBC, a digital television channel.  "Blue Peter" is produced in a magazine format, often transmitting live, and features a combination of studio presentation, interviews and outside broadcasting items.  There have been thirty-seven official presenters of "Blue Peter".

For the Children: For the Children was a British television programme targeted at children of school age.  First broadcast on the BBC Television Service at 3 pm on Saturday 24 April 1937, for its first two years the series was ten minutes in length.  Suspended in 1939 along with the rest of BBC Television for the duration of World War II, it returned on 9 June 1946, running on Sunday afternoons and expanded to twenty minutes in length.

Volcano Live: Volcano Live was a live television programme broadcast on BBC Two from 9 July 2012.  The show was commissioned following the success of other "live" programmes such as "Stargazing Live".  "Volcano Live" was presented over four nights by Kate Humble and Iain Stewart from the Kīlauea volcano on Hawaii's Big Island.  Comedian Ed Byrne presented segments, which attempted to discover the principles behind volcanic phenomena.  "Volcano Live" also featured pre-recorded reports and interviews in addition to the real-time broadcast.  Webcams showed volcanic activity from around the world and online features included a geothermal map of current volcanic events.

Supporting paragraphs: Volcano Live Stargazing Live
Answer: January 2011