CST stands for Central Standard Time, a timezone at UTC-06:00 from Coordinated Universal Time. During Daylight Saving Time, it advances to CDT (UTC-05:00). The IANA identifier is America/Chicago.

What time is it in CST right now?

The current time in CST (Central Standard Time, UTC-06:00) is 04:47 on Friday, March 6, 2026. This clock is calculated using the IANA Time Zone Database identifier America/Chicago.

Is CST the same as UTC-06:00?

Yes, CST (Central Standard Time) is exactly UTC-06:00. To convert CST to UTC, add 06:00 hours. Note: CST can also mean China Standard Time or Cuba Standard Time, which are different offsets.

Does CST observe Daylight Saving Time?

CST (Central Standard Time, UTC-06:00) is the standard-time variant and does observe DST. During summer, clocks advance to CDT (UTC-05:00). In 2026 for North American zones: DST starts March 8 (clocks spring forward) and ends November 1 (clocks fall back). The switch means meeting times that say "14:00 CST" in January become "14:00 CDT" in summer, at the same UTC time.

What countries or regions use CST?

Central Standard Time (CST, UTC-06:00) is used in: Central United States, Central Canada, Mexico. Note that CST is also the abbreviation for China Standard Time (UTC+08:00) and Cuba Standard Time (UTC-05:00). Always confirm which CST is meant when scheduling internationally.

How do I convert CST time to UTC?

To convert CST (UTC-06:00) to UTC: add 06:00 to the CST time. Example: 09:00 CST = 15:00 UTC. In ISO 8601 format, include the offset explicitly: a CST timestamp looks like 2026-03-05T14:00:00-06:00. This format is unambiguous and safe for international data exchange.

CST Time: What is Central Standard Time? Current Time Now

What Is CST?

CST stands for Central Standard Time, a timezone at UTC-06:00 (6 hours behind Coordinated Universal Time) from Coordinated Universal Time. It is used in Central United States, Central Canada, Mexico. The IANA Time Zone Database, the authoritative global reference used by operating systems, programming languages, and web services, records this zone under the identifier America/Chicago. IANA identifiers are unambiguous: America/Chicago maps to exactly one timezone in the world, unlike the abbreviation CST, which has 3 possible interpretations (see below). During Daylight Saving Time, clocks advance one hour to CDT (UTC-05:00).

Other Meanings of CST

The abbreviation CST is not unique to Central Standard Time. It is also used for:

China Standard Time (UTC+08:00): China year-round (no DST).
Cuba Standard Time (UTC-05:00): Cuba during winter.

This ambiguity is why ISO 8601, the international standard for date and time : does not use abbreviations at all. It uses numeric offsets like +05:30 or IANA identifiers like America/Chicago. When writing times for international audiences, always include the UTC offset alongside the abbreviation to prevent misreading.

Current CST Time and Date

The clock above shows the current CST time: 04:47 on Friday, March 6, 2026. It is calculated using the browser's Intl.DateTimeFormat API with the IANA identifier America/Chicago, the same source your phone and laptop use for timezone conversions. The time updates every second. If you need a static reference, note that CST is always UTC-06:00 from UTC during standard time (winter). During summer, CDT applies at UTC-05:00.

CST to UTC Conversion

To convert CST to UTC: add 06:00 to the CST time. Example: 09:00 CST = 15:00 UTC. In ISO 8601 format, a CST timestamp is written as 2026-03-06T04:47:00-06:00. This format is unambiguous and machine-readable, always prefer it over abbreviation-only notation for data exchange.

Cities in the CST Timezone

Major cities that observe CST (UTC-06:00) include:

These cities all share the IANA zone identifier America/Chicago (or a zone with the same current offset). Click any city link to see its live clock, DST status, and time difference from major world cities.

DST Transition Dates for CST

Central Standard Time observes Daylight Saving Time. During DST, clocks advance by one hour to CDT (UTC-05:00).

In the United States and Canada, DST begins on the second Sunday of March (clocks spring forward at 02:00 local) and ends on the first Sunday of November (clocks fall back at 02:00 local). For 2026: DST starts March 8, ends November 1.

During the transition period, when North America and Europe are mid-switch, the offset between CST cities and other timezones changes temporarily. The live clock on this page always reflects the correct current offset.

DST Variants: CST vs CDT

CST (UTC-06:00) is the standard time variant, observed during winter months. During Daylight Saving Time, the zone advances to CDT (UTC-05:00). In 2026, North American DST begins March 8, 2026 at 2:00 AM (clocks spring forward) and ends November 1, 2026 at 2:00 AM (clocks fall back). The distinction matters: a meeting scheduled for "14:00 CST" in January means UTC-06:00; the same description used in July almost certainly means CDT (UTC-05:00), which many people informally call "CST" year-round.

Why Timezone Abbreviations Are Ambiguous

ISO 8601, the international standard for date and time notation, does not define timezone abbreviations. IANA, which maintains the authoritative timezone database, uses geographic identifiers (America/New_York, Asia/Kolkata) rather than abbreviations. Abbreviations emerged from railway timetables and military communications in the 19th and early 20th centuries, before any international standardization effort.

The result is a patchwork. EST is used in North America for UTC-05:00 and in parts of Australia for UTC+10:00 or UTC+11:00. IST covers three different UTC offsets across three continents. CST applies to UTC-06:00 (US Central), UTC+08:00 (China), and UTC-05:00 (Cuba). Even GMT, seemingly the anchor, is used differently than UTC: GMT is a timezone designation specific to the UK and West Africa, while UTC is the mathematical standard maintained by atomic clocks. They share the same offset (UTC+00:00) but are not interchangeable in formal contexts.

Best practice: always write the numeric offset alongside the abbreviation (CST (UTC-06:00)) or use ISO 8601 format for machine-readable timestamps. For the IANA identifier, use America/Chicago.

Converting CST to Major World Timezones

Current conversions from CST (04:47) to other major timezones:

New York (EST/EDT): 05:47 (UTC-05:00)
London (GMT/BST): 10:47 (UTC+00:00)
Dubai (GST): 14:47 (UTC+04:00)
India (IST): 16:17 (UTC+05:30)
Singapore (SGT): 18:47 (UTC+08:00)
Tokyo (JST): 19:47 (UTC+09:00)
Sydney (AEST/AEDT): 21:47 (UTC+11:00)