COB: Close of Business
COB stands for Close of Business. it’s also spokenbecause the end of business and end of day. It refers to the purpose in time when a corporation gets closed for the day. for instance, if your office opens at 9:00 am and closes at 6:00 pm then you’ll consider 6:00 pm as COB. And, suppose your boss wants you to complete the presentation before COB then it means, you’re asked to complete the presentation same day before the office gets closed at 6:30 pm.