Quote from PJKIII:
You don't have to worry about physical delivery in energies unless you fail to cover your position by the last trading day. As long as you get out by 2:30 PM Eastern on the last day, delivery is not an issue in energies. For the NGN7 July contract that day is June 27th (http://www.nymex.com/ng_fut_termin.aspx). I actually like that spread and would expect it to widen....I don't trade a lot of spreads so don't take my word for it that it will, but I thought I would at least let you know how termination and deliveries work for energy. Whether that affects your decision to enter into the trade I don't know...
Yes, I know it's possible to trade into the last trading day - unfortunately I'm using IB which don't allow you to sit with the position from 2 days prior to the First Notice date. I don't want to go through the hassle of finding a broker that allows trading this close to delivery and handle everything electronically - I'm sure it's possible.

