At select locations in markets across the United States, the nation's largest retailer is ditching its round-the-clock, 24-hour schedule and closing some stores from midnight to 6 a.m.

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DEERFIELD, Ill.--(BUSINESS WIRE)--Walgreens is extending its Same Day Delivery offering to fulfill orders 24-hours a day, seven days a week in markets across the country.*Now, customers can order ...