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Central Time • CST ↔ CDT • Live Zone Guide

Central Time Zone

Q: What is the Central Time Zone?

Central Time (CT) is a North American time-zone family. In most U.S. locations that observe daylight saving time, CT means Central Standard Time (CST), UTC−06:00, in standard time and Central Daylight Time (CDT), UTC−05:00, during daylight saving time.

Q: What is the UTC offset for Central Time?

Central Time is UTC−06:00 during Central Standard Time and UTC−05:00 during Central Daylight Time. The correct offset depends on the date and location.

Q: When does Central Time change clocks in 2026?

In U.S. Central Time locations that observe daylight saving time, clocks moved from 2:00 AM CST to 3:00 AM CDT on March 8, 2026. They return from 2:00 AM CDT to 1:00 AM CST on November 1, 2026.

Q: Is CT the same as CST?

No. CT means Central Time as a year-round time-zone family. CST is specifically Central Standard Time at UTC−06:00. In daylight-saving locations, CT becomes CDT at UTC−05:00 during the daylight-time portion of the year.

Q: What IANA time zone should I use for Central Time?

There is no single IANA identifier for every place that uses Central Time. America/Chicago is the standard representative for many U.S. CT use cases. Other valid location zones include America/Winnipeg, America/Indiana/Knox and America/North_Dakota/Center.

Q: Which U.S. states use Central Time?

Central Time is used in all or part of 20 U.S. states. Ten states are entirely in Central Time: Alabama, Arkansas, Illinois, Iowa, Louisiana, Minnesota, Mississippi, Missouri, Oklahoma and Wisconsin. Ten more are split: Florida, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, South Dakota, Tennessee and Texas.

Q: Is Central Time always one hour behind Eastern Time?

For representative U.S. locations following the same federal daylight-saving schedule, Central Time is one hour behind Eastern Time throughout the year. Location-specific exceptions can produce different results.

Q: Is Mexico City on the same Central Time as Chicago?

Not year-round. Mexico City stays at UTC−06:00 without seasonal clock changes, while Chicago alternates between CST at UTC−06:00 and CDT at UTC−05:00. They match during Chicago's standard-time season, but Chicago is one hour ahead during CDT.

Q: Where is CST used year-round?

Fixed UTC−06:00 clocks commonly labeled CST are used in places such as most of Saskatchewan, Mexico City and several Central American countries. These places do not necessarily follow the seasonal U.S. CT cycle.

Central Time (CT) uses Central Standard Time (CST), UTC−06:00, in standard time and Central Daylight Time (CDT), UTC−05:00, where daylight saving time is observed. On August 21, 2026, representative U.S. Central Time locations such as Chicago are on CDT / UTC−05:00.

CT is the year-round zone family; CST and CDT are its seasonal forms. Do not label Chicago, Dallas, Houston, Minneapolis or New Orleans “CST” year-round. Use CT when the date is unspecified, and derive CST vs CDT from the date. For many U.S. software use cases, America/Chicago is the representative IANA zone—but Central Time is broader than one IANA identifier.

Standard timeCST · UTC−06Central Standard Time

Daylight timeCDT · UTC−05Central Daylight Time

Representative IANAAmerica/ChicagoNot the only CT identifier

Central Time Now Time Zone Converter Central Time Zone Map

Search CT, CST, CDT, a city, an IANA zone, DST dates or a related time-zone reference.

Popular: CST Time Now CDT Time Now Time Zone Abbreviations Central Time Zone Time Zone Converter Central Time Zone Map

Central Time Zone at a Glance

Central Time is best understood as a regional family with seasonal abbreviations, multiple IANA identifiers and a mix of DST-observing and fixed-CST locations.

Central Time Now

See the live representative CT clock with the correct current CST or CDT abbreviation.

See live CT → CST

CST vs CDT

Understand UTC−06:00 standard time, UTC−05:00 daylight time and when each applies.

Compare CST & CDT → DST

2026 DST Dates

Central Time locations following U.S. rules changed March 8 and return November 1, 2026.

See 2026 changes → USA

U.S. Central Time States

See statewide CT states, split-zone states and major Central Time cities.

See U.S. geography → IANA

Central Time IANA Zones

Learn why America/Chicago is a reference—not a universal identifier for every CT location.

See IANA examples → −05

Fixed CST vs Seasonal CT

Separate Regina, Cancun and Panama from places that alternate CST and CDT.

See the distinction →

Central Time Now — CST or CDT?

The current abbreviation depends on the date. This table uses America/Chicago as the representative U.S. Central Time clock and updates automatically.

Browse time-zone abbreviations →

Reference	IANA Zone	Live Time	Current Abbreviation	Current UTC Offset	Zone Family
Central Time	America/Chicago	Live	—	—	CT · CST ↔ CDT

Use CT for year-round, date-unspecified references. Use CST only when UTC−06:00 standard time applies, and CDT only when UTC−05:00 daylight time applies.

Central Standard Time Central Daylight Time Convert Central Time

Central Time Reference Pages

Move between the CT family, seasonal abbreviations, neighboring U.S. zones, current-time discovery and visual geography.

Parent ReferenceTime Zone AbbreviationsBrowse CT, CST, CDT and other global abbreviation families.→ Standard-Time FormCST Time NowCentral Standard Time is the fixed UTC−06:00 abbreviation.→ Daylight-Time FormCDT Time NowCentral Daylight Time is the UTC−05:00 seasonal abbreviation.→ Neighboring U.S. ZoneEastern Time ZoneNormally one hour ahead of representative Central Time.→ Adjacent Seasonal ReferenceEDT Time NowCompare Central daylight time with the Eastern daylight-time clock.→ Geographic DiscoveryWorld ClockFind current local time by city, state, country or location.→ Visual GeographyCentral Time Zone MapSee U.S. Central Time boundaries and split states visually.→ ConversionTime Zone ConverterConvert CT for any date with CST/CDT applied automatically.→

Which U.S. States Are in the Central Time Zone?

Central Time is used in all or part of 20 states. Ten are entirely in Central Time, while ten are split between Central and Eastern or Mountain Time.

See all U.S. time zones →

Coverage	States	Typical Rule
Central Time statewide	Alabama, Arkansas, Illinois, Iowa, Louisiana, Minnesota, Mississippi, Missouri, Oklahoma, Wisconsin	CST UTC−06 ↔ CDT UTC−05
Split: Central + Eastern	Florida, Indiana, Kentucky, Michigan, Tennessee	Selected western or northwestern/southwestern areas use CT; other areas use ET
Split: Central + Mountain	Kansas, Nebraska, North Dakota, South Dakota, Texas	Most or large eastern portions use CT; western areas use MT

Official U.S. zone boundaries are legal transportation boundaries maintained under 49 CFR Part 71. They often follow county, river or state lines rather than pure longitude.

CT = CST ↔ CDT

Central Time Has Two Seasonal UTC Offsets

Central Standard Time (CST) is UTC−06:00. Central Daylight Time (CDT) is UTC−05:00. In U.S. locations that observe daylight saving time, the active clock changes on the second Sunday in March and the first Sunday in November. “Central Time” or “CT” is the safest year-round label.

CST Time Now CDT Time Now 2026 DST Dates Convert CT

ChicagoLive timeLoading current offset

WinnipegLive timeLoading current offset

Mexico CityLive timeLoading current offset

ReginaLive timeLoading current offset

Central Time Difference from Eastern, Mountain, Pacific & London

For representative U.S. zones following the same federal DST calendar, Central Time keeps a stable difference from Eastern, Mountain and Pacific Time. International and fixed-offset comparisons can change seasonally.

Convert a specific date and time →

Reference Zone / City	Typical Relationship to CT	Important Detail
Eastern Time	ET +1 hour	Representative U.S. ET and CT locations change clocks on the same federal dates.
Mountain Time	CT +1 hour	Applies to representative DST-observing Mountain Time locations; fixed-offset exceptions can differ.
Pacific Time	CT +2 hours	Applies to representative U.S. Pacific locations following the same federal DST schedule.
London	London +6h on CST; +5h on CDT	U.S. and U.K. clock-change dates do not always align, creating short transition windows.
Tokyo / JST	Tokyo +15h on CST; +14h on CDT	Japan uses UTC+09:00 year-round.
India / IST	India +11h 30m on CST; +10h 30m on CDT	India uses UTC+05:30 year-round.

Eastern Time Zone EDT Time Now Open Full Converter

Central Time Daylight Saving Time in 2026

Most U.S. Central Time locations follow the federal daylight-saving schedule. NIST confirms that in 2026 DST runs from March 8 at 2:00 AM local time until November 1 at 2:00 AM local time.

March 8, 2026 · 2:00 AM CSTClocks jump forward to 3:00 AM CDT. UTC−06:00 becomes UTC−05:00.

November 1, 2026 · 2:00 AM CDTClocks move back to 1:00 AM CST. UTC−05:00 becomes UTC−06:00.

General U.S. ruleSecond Sunday in March → first Sunday in November.

Central Time Extends Beyond the U.S. DST Pattern

Central Time and CST-like UTC−06:00 clocks span Canada, Mexico and Central America. Some locations follow seasonal CDT; others remain fixed at UTC−06:00 all year.

Seasonal CST ↔ CDT examplesChicago, Dallas, Houston, Minneapolis, Winnipeg and selected northern-border areas of Mexico.

Fixed UTC−06 examplesMost of Saskatchewan, Mexico City, Belize, Costa Rica, El Salvador, Guatemala, Honduras and Nicaragua.

Planning ruleUse location-based IANA zones instead of assuming every “CST” location follows Chicago's seasonal rules.

Central Time vs Fixed CST — Same Winter Clock, Different Rules

A location can use UTC−06:00 all year without following the seasonal U.S. Central Time cycle. The difference becomes visible while Chicago is on CDT.

Seasonal CT

Chicago · America/Chicago

Uses CST at UTC−06:00 in standard time and CDT at UTC−05:00 during U.S. daylight saving time.

Fixed UTC−06

Mexico City · America/Mexico_City

Stays at UTC−06:00 year-round. It matches Chicago during CST and is one hour behind Chicago during CDT.

Fixed UTC−06

Regina · America/Regina

Most of Saskatchewan stays at UTC−06:00 year-round instead of following Winnipeg's CST↔CDT cycle.

Fixed UTC−06

Costa Rica · America/Costa_Rica

Costa Rica keeps UTC−06:00 all year, so its relationship to Chicago changes when U.S. DST starts and ends.

Seasonal CT

Winnipeg · America/Winnipeg

Manitoba's major Central Time reference follows CST↔CDT and normally matches Chicago.

Key Rule

Offset ≠ Complete Time-Zone Rule

Two places can share UTC−06:00 today yet have different future behavior. Store the real IANA location zone when dates matter.

Quick Central Time Zone Compare

Compare representative Central Time with U.S., Canadian and fixed-CST locations. The live tool applies the active date-aware offset for each IANA zone.

Location A

Live time

Current abbreviation, UTC offset and difference

⇄

Location B

Live time

Current abbreviation, UTC offset and difference

Open Full Converter

How the Central Time Zone Works

Six rules resolve the most common CT, CST and CDT questions.

01 · CT

CT Is the Year-Round Family

Use Central Time or CT when you mean the zone generally without committing to a seasonal abbreviation.

02 · CST

CST Is UTC−06:00

Central Standard Time is the standard-time form used by seasonal CT locations in winter and by some fixed-CST locations all year.

03 · CDT

CDT Is UTC−05:00

Central Daylight Time is the daylight-saving form used by many U.S. and Canadian Central Time locations.

04 · IANA

There Is No Single Universal CT Identifier

America/Chicago is the representative U.S. zone, but Winnipeg, Indiana, North Dakota, Mexico and fixed-CST regions can use other location IDs.

05 · Boundaries

U.S. CT Is Defined Legally

The Department of Transportation maintains official U.S. time-zone boundaries, including county-level lines in split states.

06 · Fixed CST

UTC−06:00 Does Not Always Mean Seasonal CT

Mexico City, Regina and much of Central America remain at UTC−06:00 while Chicago changes to UTC−05:00 for daylight time.

Central Time IANA Zones — Why America/Chicago Is Only a Reference

“Central Time” is a regional label, not one universal IANA zone. America/Chicago is the best-known representative for U.S. CT, but software should store the actual location zone whenever possible so historical boundaries and DST rules remain date-aware.

CST · UTC−06:00 abbreviation reference CDT · UTC−05:00 abbreviation reference CT and global abbreviations EDT · adjacent Eastern daylight reference Date-aware location conversion

Useful IANA Examples Inside or Around Central Time

America/ChicagoRepresentative zone for Chicago and a large share of U.S. Central Time.

America/WinnipegMajor Canadian seasonal Central Time reference.

America/Indiana/KnoxIndiana location-specific Central Time history.

America/North_Dakota/CenterNorth Dakota location-specific Central Time history.

America/Mexico_CityModern fixed UTC−06:00 Mexico City rule; not Chicago's seasonal cycle.

America/ReginaMost-of-Saskatchewan fixed UTC−06:00 reference.

Best practice: store the location's IANA zone rather than “CT,” “CST,” “CDT” or a fixed UTC offset when historical or future rule changes matter.

Visual Geography

See the Central Time Zone on a Map

Use the Central Time Zone Map for boundary-specific intent. It shows where Central Time meets Eastern and Mountain Time across split states such as Florida, Indiana, Kentucky, Michigan, Tennessee, Kansas, Nebraska, North Dakota, South Dakota and Texas.

Open Central Time Zone Map U.S. Time Zone Map

CT · CST UTC−06 ↔ CDT UTC−05

Looking for the Current Time in a Central Time City?

Central Time is a zone-family reference. If your main question is the current local time in Chicago, Dallas, Houston, Minneapolis, New Orleans or another location, use the geographic world clock so the correct local IANA zone and DST rule are applied.

Geographic DiscoveryWorld Clock Central U.S.Current Time in Chicago TexasCurrent Time in Dallas Fixed UTC−06 ContrastCurrent Time in Mexico City

Related Central Time Guides

Continue with the fixed abbreviations, neighboring zone family and official reference pages most relevant to CT.

Time Zone Abbreviations CST Time Now CDT Time Now EDT Time Now Eastern Time Zone Central Time Zone Map

Useful Central Time Tools

Use these references for live geographic time, conversion, offsets, abbreviations and meeting planning.

Time Zone Converter Time Zone Difference Time Zone Meeting Planner UTC Offsets Daylight Saving Time World Clock

Sources & Methodology

U.S. Central Time abbreviations and offsets are based on NIST. U.S. standard-zone definitions and boundaries are based on Department of Transportation oversight and 49 CFR Part 71. IANA location examples are based on the current Time Zone Database. Canadian and Mexican examples are treated as location-specific rule sets rather than inferred from abbreviations alone.

NIST — U.S. Time Zones, CT / CST / CDT NIST — U.S. Daylight Saving Time Rules U.S. Department of Transportation — Uniform Time & Zone Oversight 49 CFR § 71.6 — Central Zone 49 CFR § 71.7 — Central–Mountain Boundary IANA Time Zone Database — Location-Based Rules

Last reviewed: August 21, 2026. Representative U.S. Central Time is currently CDT / UTC−05:00 and returns to CST / UTC−06:00 on November 1, 2026.

Central Time Zone FAQ

What is the Central Time Zone?

Central Time (CT) is a North American time-zone family. Most DST-observing U.S. CT locations use CST at UTC−06:00 in standard time and CDT at UTC−05:00 during daylight time.

What is Central Time right now, CST or CDT?

On August 21, 2026, representative U.S. Central Time locations such as Chicago are observing CDT at UTC−05:00. They return to CST on November 1, 2026.

What is the UTC offset for Central Time?

CT is UTC−06:00 during CST and UTC−05:00 during CDT.

When does Central Time change clocks in 2026?

U.S. DST-observing CT locations moved forward on March 8, 2026 and move back on November 1, 2026, both at 2:00 AM local time.

Is CT the same as CST?

No. CT is the year-round family. CST specifically means UTC−06:00 standard time; CDT means UTC−05:00 daylight time.

What IANA time zone should I use for Central Time?

America/Chicago is the standard representative for many U.S. CT use cases, but there is no single IANA identifier for every Central Time location.

Which U.S. states use Central Time?

Central Time is used in all or part of 20 U.S. states: 10 entirely and 10 partly.

Is Central Time always one hour behind Eastern Time?

Representative U.S. Eastern and Central Time locations are one hour apart throughout the year because they normally change clocks on the same dates.

Is Mexico City on the same Central Time as Chicago?

Only during Chicago's CST season. Mexico City remains UTC−06:00 year-round, while Chicago moves to CDT / UTC−05:00 during U.S. daylight saving time.

Where is CST used year-round?

Fixed UTC−06:00 clocks are used in places such as most of Saskatchewan, Mexico City and several Central American countries. Those places do not necessarily follow Chicago's CST↔CDT cycle.