The FIA has announced a 21-race calendar for the 2015 F1 season, with Korea provisionally added early in the year.

While an original 20-race calendar was approved back in September, a meeting of the World Motor Sport Council in Doha on Wednesday has seen the Korean Grand Prix added as the first race of a double-header with the Spanish Grand Prix in May. A race at a purpose-built circuit in Mokpo was last held in 2013 but dropped off the calendar this year.

As a result, there is also some tweaks to the opening races of the season, with China moving ahead of Bahrain in April. While Korea is marked as provisional, the 21-race calendar would be the largest in F1 history.

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The full 2015 calendar is as follows:

March 15 - Australian Grand Prix March 29 - Malaysian Grand Prix April 12 - Chinese Grand Prix April 19 - Bahrain Grand Prix May 3 - Korean Grand Prix (TBC) May 10 - Spanish Grand Prix May 24 - Monaco Grand Prix June 7 - Canadian Grand Prix June 21 - Austrian Grand Prix July 5 - British Grand Prix July 19 - German Grand Prix July 26 - Hungarian Grand Prix August 23 - Belgian Grand Prix September 6 - Italian Grand Prix September 20 - Singapore Grand Prix September 27 - Japanese Grand Prix October 11 - Russian Grand Prix October 25 - United States Grand Prix November 1 - Mexican Grand Prix November 15 - Brazilian Grand Prix November 29 - Abu Dhabi Grand Prix