The phrase "day deadline" means that a task or assignment needs to be completed by the end of the day, usually before the day ends or a specific time limit. Full definition
There is a 10 business day deadline for you to review and edit your first draft, but rarely do resumes need that. (etsy.com)
The act of back - dating, altering or changing the identification after the 45 calendar day deadline has passed is criminal tax fraud and should never be considered under any circumstances. (exeter1031.com)
The 90 - day deadline given to the committee was extended by at least a month to enable it complete its work. (ghanapoliticsonline.com)