Formula 1's biggest ever calendar has been signed off by the FIA, with the 21-race schedule having been approved by the FIA's World Motor Sport Council on Wednesday.

However, there remains some uncertainty about the future of the Austin event, with its October 23 date being pencilled in as subject to confirmation.

The event needs to finalise a contract with the national sporting authority, plus Bernie Ecclestone – against the backdrop of funding issues.

The uncertainty about the event may have prompted the only tweak to the schedule agreed several months ago, with Mexico's date having been shifted from November 6 to October 30.

This means it will be a back-to-back with Austin again, rather than with Brazil.

The June 19 date for the Baku Grand Prix has also been set in stone, meaning that it will clash with Le Mans – as had been originally feared.

Although the early start time for the race will ensure it will not clash with the finish of the endurance classic, it means Le Mans winner Nico Hulkenberg will be unable to defend his title.

2016 F1 calendar:



20 March


3 April


17 April


1 May


15 May


29 May

 Monte Carlo

12 June


19 June


3 July

 Red Bull Ring

10 July


24 July


31 July


28 August


4 September


18 September


2 October


9 October


23 October


30 October

 Mexico City

13 November


27 November

 Abu Dhabi

Gallery: 2016 Formula 1 calendar confirmed, US GP uncertain