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CST vs EST: What Is the Difference?
Central Standard Time (CST) and Eastern Standard Time (EST) are two of the four main time zones in the contiguous United States, and they're a full hour apart.
The Basics
Eastern Standard Time is UTC−5. Central Standard Time is UTC−6. That means EST is always one hour ahead of CST — when it's 9:00 AM in Chicago (CST), it's 10:00 AM in New York (EST).
Both zones observe daylight saving time on the same schedule, shifting to Eastern Daylight Time (EDT, UTC−4) and Central Daylight Time (CDT, UTC−5) together — so the one-hour gap between them stays constant year-round.
Which States Use Each Zone
Eastern Time covers states along the Atlantic coast: New York, Florida, Georgia, Massachusetts, and Washington D.C., among others. Central Time covers a broad swath of the middle of the country: Illinois, Texas, Missouri, Minnesota, Wisconsin, Iowa, Kansas, Nebraska, and Louisiana.
A Note on Ambiguity
"CST" is also the abbreviation for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5, or UTC−4 during Cuban daylight saving). When scheduling with international contacts, always confirm which "CST" is meant — this site defaults CST to Central Standard Time for North American searches but flags the ambiguity explicitly.
Frequently Asked Questions
Frequently Asked Questions
How many hours ahead is EST from CST?
EST is 1 hour ahead of CST. EST is UTC−5 and CST is UTC−6.
Frequently Asked Questions
Does CST observe daylight saving time?
Yes — Central Time shifts to CDT (UTC−5) in spring and back to CST (UTC−6) in fall. During CDT, Central and Eastern Standard Time briefly align.