Formula One's governing body ratified a record 20-race 2011 calendar, with lingering question marks over the Chinese and Indian grands prix.

FIA said both were included but subject to homologation, or approval, of the circuits.

That was expected in the case of India, due to make its debut on October 30 with a new track under construction near New Delhi.

China's impressive Shanghai circuit has hosted seven Formula One races but an FIA spokeswoman said changes needed to be made.

"The homologation licence for the Shanghai International Circuit has expired and before a new licence can be issued by the FIA some work on the track is required, with particular regards to the current drainage system and the quality of the track surface," she said.

Calendar:

March 13 - Bahrain

March 27 - Australia

April 10 - Malaysia

April 17 - China*

May 8 - Turkey

May 22 - Spain

May 29 - Monaco

June 12 - Canada

June 26 - Europe (Valencia)

July 10 - Britain

July 24 - Germany

July 31 - Hungary

August 28 - Belgium

September 11 - Italy

September 25 - Singapore

October 9 - Japan

October 16 - South Korea

October 30 - India

November 13 - Abu Dhabi

November 27 - Brazil