The nearest expiration date for MISO Minnesota Hub Peak Calendar-Month LMP 5 MW Futures (Jan 2015) is Jan 1, 2015.
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 MISO Minnesota Hub Peak Calendar-Month LMP 5 MW Futures (Jan 2015) before Jan 1, 2015.