Great question. To get the sale items on Thursday you need to come in on Thursday. Thursday always starts immediately after the stroke of midnight Wednesday. Therefore if the store is open 24 hours you can hang out in the store late Wednesday night and sip coffee or browse for wine until the clock strikes midnight at which point you are free to enjoy the Thursday discount.
The flyer for the sale should say exactly what time the prices take effect. For the regular weekly flyer it's 6am on Thursday as the earliest you can check out to get the prices.
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