If, at a later date, you decide to change the size of your game window (and you very well might), being able to change the value in this one spot will save you time twice.

Keep a calendar to stay organized: Display it on the refrigerator or other prominent spot so that everybody can stay up-to-date. And if you find an empty space on the calendar, leave it alone!

If the price increased on the due date, selling the asset on the spot market will result a gain (compared with contract signing date), but there will be losses on the futures market.