24 hours
The time difference is 10 hours.
Phoenix, AZ is in the Mountain Standard Time (MST) zone, while Columbia, SC is in the Eastern Standard Time (EST) zone. The time difference between Phoenix and Columbia is 2 hours, with Phoenix being behind Columbia.
Madrid is nine hours later than Phoenix
The longest time difference would be between Tonga and Samoa. They can be 24 hours apart but are only 550 miles / 887km apart in distance.
American Samoa is 6 hours behind New York during Standard Time (Winter) and 7 Hours behind New York during Daylight Saving Time. If it is noon in New York, it is 6am in winter and 5am in summer in American Samoa. The time difference to Samoa (Not American Samoa) is a little harder to calculate since their daylight saving time "falls" forward in September and "Springs" backwards in April. So the time difference is either 6 hours behind when both Samoa and the New York are in Daylight Saving Time. 7 Hours behind when New York is in Daylight Saving and Samoa is Not.
When the U. S. is on Daylight Saving Time, from the 2nd Sunday of March to the 1st Sunday of November, there is no time difference between Phoenix and Las Vegas. When the U. S. is on Standard Time, Phoenix is 1 hr. ahead of Las Vegas. 4 AM PST = 5 AM PDT = 5 AM MST
None; they follow exactly the same schedules.
The time difference between Phoenix, Arizona, and Puerta Plata, Dominican Republic, is three hours. Phoenix is in the Mountain time zone, and Puerta Plata is in the Atlantic time zone, which is three time zones east of the Mountain time zone. Phoenix and Puerta Plata do not observe daylight savings time.
American Samoa Standard Time (UTC-11) is six hours behind American Eastern Standard Time (UTC-5) and seven hours behind Eastern Daylight Saving Time (UTC-4).
3 hours in the winter: 6 PM Tampa time = 3 PM Phoenix time 2 hours in the summer: 6 PM Tampa time = 4 PM Phoenix time. Arizona does not observe Daylight Saving Time; Florida does.
Central Time is 1 hour ahead of Phoenix, AZ, USA