Typical business and shop opening hours vary significantly by region, cultural norms, climate, labor laws, and local customs, with some countries maintaining strict nine-to-five weekday schedules while others spread activity across extended or split hours to accommodate heat, meal traditions, or family life. In Northern Europe, North America, and much of East Asia, standard business hours for offices are generally Monday to Friday from approximately 8:00 or 9:00 AM to 5:00 or 6:00 PM, with retail shops often opening at 9:00 or 10:00 AM and closing at 6:00 to 8:00 PM on weekdays, and staying open for shorter hours or closing earlier on weekends, though large shopping centers and supermarkets in urban areas may operate later or even around the clock. In contrast, Mediterranean countries such as Spain, Italy, Greece, and parts of Latin America often observe a midday break or siesta, with businesses and shops opening around 9:00 AM, closing for two to three hours in the early afternoon, and reopening from roughly 4:00 or 5:00 PM until 8:00 or 9:00 PM, a pattern that helps people avoid the hottest part of the day and allows for long family lunches. Middle Eastern countries generally close businesses on Fridays and sometimes Saturdays in observance of the Islamic weekend, with the workweek typically running from Sunday to Thursday, and daily hours may adjust during Ramadan when many businesses operate shorter daytime hours but extend evening hours after sunset. In many Asian cities, convenience stores, pharmacies, and some supermarkets operate 24 hours a day, seven days a week, reflecting high population density, busy lifestyles, and a service-oriented retail culture, while smaller family-run shops in the same cities may keep irregular hours based on the owner's schedule. Sunday trading laws in parts of Europe restrict or limit retail opening hours on Sundays to protect workers and traditional rest days, so visitors may find that most shops except for tourist areas, airports, and train stations are closed or open only for a few hours, though this varies by country and is changing in some places. Public holidays, national celebrations, and local festivals can lead to widespread closures or adjusted hours, and travelers are advised to check in advance if they will be in a destination during major holidays to avoid finding essential services unavailable.