Races in Singapore, Germany and South Korea, plus the new Grand Prix in New Jersey, are on a provisional calendar for the 2013 Formula One season despite uncertainty over their immediate futures.

The provisional venues and dates were circulated to teams at the Singapore Grand Prix, seeking feedback ahead of official confirmation at the FIA’s World Motor Sports Council next week.

Singapore’s contract expires this year with an announcement expected on Saturday on whether it will continue next season.

South Korea’s race and the German round at the financially troubled Nurburgring are also subject to contract negotiations, while the New Jersey race was given a mid-June date pending completion of the circuit.

Like this year, the season will start in Australia, on March 17, and finish in Brazil, on November 24.

The only race dropping out is Valencia, which from next season on will alternate with Barcelona as host of the Spanish GP rather than both having a race. That leaves Europe with only seven of 20 races, the lowest total since 1969.

The provisional calendar retains a long mid-season break between the Hungarian GP on July 28 and Belgian GP on September 1.

Provisional 2013 Formula 1 calendar

Mar 17 Australia (Melbourne)

Mar 24 Malaysia (Sepang)

Apr 14 China (Shanghai)

Apr 21 Bahrain (Sakhir)

May 12 Spain (Barcelona)

May 26 Monaco (Monte Carlo)

Jun 9 Canada (Montreal)

Jun 16 America (New Jersey) *

Jun 30 Britain (Silverstone)

Jul 21 Germany (Nurburgring)*

Jul 28 Hungary (Hungaroring)

Sep 1 Belgium (Spa)

Sep 8 Italy (Monza)

Sep 22 Singapore (Marina Bay) *

Oct 6 Japan (Suzuka)

Oct 13 Korea (Yeongam) *

Oct 27 India (Buddh International Circuit)

Nov 3 Abu Dhabi (Yas Marina)

Nov 17 United States (Austin)

Nov 24 Brazil (Interlagos)

* subject to confirmation