Arby's is promoting daylight savings time..Yes, I know we don't "celebrate" it here. But anyway, in honor of daylight savings time, they are going to give away a free Roastburger with the purchase of a drink on Sunday, March 8th only. You need to print out the coupon, although some stores may not ask for it. Not sure, print it out to be safe. Here it is. Free Arby's Roastburger Coupon.