Who invented the time zone? Sir Sandford Fleming developed the system in 1878 that divided the world into 24 different time zones. How long has time zones been around? The worldwide time zone system was developed in 1878. What time zones have the most states? The time zone that covers the most states is the Eastern Standard Time Zone (EST)

How many different time zones are in the US? There are six different time zones including Alaska and Hawaii. What is the latest time zone in the United States? Eastern Standard Time Zone (EST) is the latest time zone by the hour. WA OR NV CA PACIFIC WY UT NM MT ID CO AZ MOUNTAIN WI TX TN SD OK ND NE MO MS MN LA KS IA IL AR AL CENTRAL VA VT WV SC RI PA OH NC NY NJ NH MI MA MD ME KY IN GA FL DE CT EASTERN Eastern Standard Time Zone Connecticut (CT) The other two are Alaskan Standard Time (AKST) and the Hawaii-Aleutian Standard Time (HST). However, the United States actually has six standard time zones.

The most familiar four major United States time zones are Eastern Standard Time (EST), Central Standard Time (CST), Mountain Standard Time (MST), and Pacific Standard Time (PST). View the live map of US time zones below.

Us time zone map hour difference