In the United States, there are six operating time zones. Below, we show a list of each time zone, and the most popular cities included in it.

• EST – Eastern Standard Time (UTC-5) –  New York, Washington D.C.,Philadelphia, Jacksonville, Columbus, Miami, Orlando
• CST – Central Standard Time (UTC-6) – Chicago, Austin, Dallas, Houston

• MST – Mountain Standard Time (UTC-7) – Phoenix, Tuscon, Mesa, Denver, El Paso, Albuquerque, Aurora

• PST – Pacific Standard Time (UTC-8) – Los Angeles, San Diego, San Francisco, Las Vegas, Seattle, Portland

• AKST – Alaska Standard Time (UTC-9) – Anchorage, Juneau, Fairbanks, Nome

• HAST – Hawaii-Aleutian Standard Time (UTC-10) – Unalaska, Adak, Honolulu