United States · Nevada (NV) · Las Vegas · Las Vegas Travel Forum We are going to vegas in a week(first timers)twtcrental.com I wanted to know what time is sunset? What is the time change from Phoenix, AZ to Las Vegas, NV? Check the time zones overseas and worldwide to plan a meeting or schedule a phone call. Las Vegas Time is in the Pacific Time Zone in the United States of America (USA). US Pacific Standard Time (PST) is 8 hours behind Greenwich.