Group 1: Thanksgiving Closures - Most federal and financial institutions will pause operations on Thanksgiving Day, including banks, post offices, and the stock market (NYSE and Nasdaq) [2] - Major shipping carriers such as United Parcel Service Inc. and FedEx Corp. will suspend standard pickup and delivery services on this day [2] - Retail giants like Walmart Inc., Target Corp., Costco Wholesale Corp., Macy's Inc., and Kohl's Corp. will remain closed on Thanksgiving Day [3] Group 2: Thanksgiving Openings - Many grocery chains, including Kroger Co., Whole Foods, and Sprouts Farmers Market Inc., will be open on Thanksgiving, albeit with reduced hours [4] - Select pharmacies like CVS Health Corp. and Walgreens will operate, but customers should check local store hours as pharmacy counters may be closed [4] Group 3: Black Friday Operations - Business operations will resume on Black Friday, November 28, with banks and post offices reopening for regular service [6] - The stock market will open but will close early at 1 p.m. ET on Black Friday [6] - Major retailers, including Walmart and Target, will open at 6 a.m. for Black Friday deals, marking the start of the shopping season [6]