Get your taxes done using TurboTax

The 60-day rollover rule allows you to transfer funds from one tax-advantaged retirement plan or account to another without incurring any tax or penalty, provided you follow the rule. The rule requires you to deposit all your funds into a new individual retirement account (IRA), 401(k), or another qualified retirement account within 60 days of the distribution 

The distribution date would be the date.on the check.  since you are not of retirement age there would be an early withdrawal penalty plus the income taxes.