If you’re planning to buy something on Best Buy’s website this week… don’t do it now. Instead, wait until Friday. Rather Be Shopping has taken a look at when popular online shopping websites are most likely to offer coupons and tech fans should know that Staples typically offers discounts on Mondays, that Best Buy most often sends out new coupon codes on Fridays and that Target most often updates its online clearance department on Saturdays.

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These are only some of the online retailers that are most likely to offer deals on specific days of the week — others in Rather Be Shopping’s list include Barnes & Noble, The Home Depot, Sports Authority and Kohls. To read the whole thing, check it out here.