The nearest expiration date for European 1% Fuel Oil Cargoes FOB NWE (Platts) Futures (Nov 2013) is Nov 29, 2013.
The best time to sell a futures contract is when you've already made money on the investment, but still have plenty of time left before the expiration date. Thus, a good option would be to sell European 1% Fuel Oil Cargoes FOB NWE (Platts) Futures (Nov 2013) before Nov 29, 2013.