Current Time in Cities

What time is it in Chicago, Mexico City, Dallas, and Houston right now?

Chicago reads 2,664,452 people on Central Daylight Time until 2:00 a.m. on Sunday 1 November 2026. Mexico City reads 12,294,193 people on Central Standard Time all year. That one fact reshapes every cross-border call, shipment deadline, and live-stream watch party across the zone.

Live clocks for major Central Time cities

Which cities run on Central Time, and which ones stay on standard time?

Chicago (2,664,452), Dallas (1,326,087), Houston (2,314,157), and San Antonio (1,526,656) all use America/Chicago. They spring forward and fall back on the US schedule. Winnipeg uses America/Winnipeg and follows the same US DST dates.

Mexico City (12,294,193), Iztapalapa (1,835,486), Puebla (1,692,181), Ecatepec de Morelos (1,645,352), Santiago de Querétaro (1,594,212), León de los Aldama (1,579,803), Zapopan (1,476,491), Guadalajara (1,385,629), and Gustavo Adolfo Madero (1,185,772) all sit on America/Mexico_City. Monterrey (1,135,512) uses America/Monterrey. Mérida (1,201,000) uses America/Merida. None of them observe daylight saving time.

Same clock in winter, an hour apart in summer

From November to March, the Windy City and Mexico’s capital show the same hour. From March to November, the Illinois hub runs one hour ahead.

Is Mexico City on Central Time year-round without DST?

Mexico abolished DST nationally in October 2022, effective 2023. The law carved out an exception for northern border municipalities that align with US DST for economic reasons. The capital and Monterrey do not qualify. They stay on permanent CST (UTC−6).

What the split means for meetings

A meeting set for 10:00 a.m. Chicago time in July hits Mexico City at 9:00 a.m. That same meeting in January lands at 10:00 a.m. in both cities. Check the season before you send the invite.

When do Central Time clocks next change in the US?

US cities on Central Time fall back on Sunday 1 November 2026. At 2:00 a.m. local, clocks go back 60 minutes to 1:00 a.m. CDT (UTC−5) becomes CST (UTC−6).

The next spring forward lands on Sunday 14 March 2027 at 2:00 a.m. local. Clocks go forward 60 minutes to 3:00 a.m. CST (UTC−6) becomes CDT (UTC−5).

Mexico City does not change on either date. It stays on CST year-round.

What’s the time difference between Central Time cities and the rest of the world?

On 15 January 2026, when the US side is on CST (UTC−6), Central Time cities are:

• New York: 1 hour ahead
• Los Angeles: 2 hours behind
• London: 6 hours ahead
• Paris: 7 hours ahead
• Dubai: 10 hours ahead
• Mumbai: 11.5 hours ahead
• Singapore: 14 hours ahead
• Tokyo: 15 hours ahead
• Sydney: 17 hours ahead
• Johannesburg: 8 hours ahead
• São Paulo: 3 hours ahead

Summer gaps from Chicago, Dallas, Houston, and Winnipeg

On 15 July 2026, when US cities are on CDT (UTC−5) and Mexico City remains on CST (UTC−6), the gaps shift. From the US and Canadian cities:

• New York: 1 hour ahead
• Los Angeles: 2 hours behind
• London: 6 hours ahead
• Paris: 7 hours ahead
• Dubai: 9 hours ahead
• Mumbai: 10.5 hours ahead
• Singapore: 13 hours ahead
• Tokyo: 14 hours ahead
• Sydney: 15 hours ahead
• Johannesburg: 7 hours ahead
• São Paulo: 2 hours ahead

Mexico City’s summer offsets

Mexico City, on permanent CST, stays on the January offsets all summer. Add one hour to every figure above to get the capital’s gap in July.

What daylight looks like in Mexico City across the year

Mexico City sits at 19.428, -99.128, elevation 2,240 m. Its daylight swings from 10 hours 57 minutes to 13 hours 18 minutes.

Spring and summer light

On the March equinox (20 March 2026): sunrise 06:41, sunset 18:47, 12 hours 6 minutes of daylight.

On the June solstice (21 June 2026): sunrise 05:58, sunset 19:16, 13 hours 18 minutes of daylight.

Autumn and winter light

On the September equinox (22 September 2026): sunrise 06:24, sunset 18:33, 12 hours 9 minutes of daylight.

On the December solstice (21 December 2026): sunrise 07:05, sunset 18:03, 10 hours 57 minutes of daylight.

The practical rhythm of Central Time cities

Business hours in US Central cities run 8:00 a.m. to 5:00 p.m. CT. The New York Stock Exchange opens at 8:30 a.m. CT and closes at 3:00 p.m. CT. The Chicago Mercantile Exchange and Chicago Board of Trade operate on CT. Mexico City’s stock exchange runs on permanent CST, so its trading day shifts relative to Chicago when the US is on daylight time.

School mornings and the spring-forward slog

School start times typically land between 8:00 a.m. and 8:30 a.m. The spring-forward week in March means children walk to school or wait for buses in darkness for several weeks.

Prime time and cross-zone calls

Prime-time television runs on the “8/7c” system: 8:00 p.m. Eastern, 7:00 p.m. Central. Major live events from the Super Bowl to election coverage anchor to Eastern prime time. Central viewers get the 7:00 p.m. start.

For cross-zone calls, the best window hitting all four mainland US zones is 12:00 p.m. to 1:00 p.m. CT. For US-to-Europe calls, aim for 8:00 a.m. to 11:00 a.m. CT. For US-to-Asia calls, 6:00 p.m. to9:00 p.m. CT reaches the next business morning.

Do Saskatchewan and the US-Mexico border cities change their clocks?

Regina and Swift Current use America/Regina and America/Swift_Current. Both stay on CST (UTC−6) year-round. That means Regina matches Chicago in winter but runs one hour behind in summer, exactly like Mexico City.

The border towns that follow the US

Along the US-Mexico border, Matamoros and Ojinaga follow the US DST schedule. Brownsville and Matamoros stay on the same clock all year. Mexico City does not.

How did Central Time cities end up with split DST rules?

Before 18 November 1883, US cities ran on 300-plus local solar times. That day, railroads imposed four standard time zones, and Central Time was fixed at 90° west of Greenwich. The Standard Time Act made it federal law in 1918. The Uniform Time Act of 1966 created consistent DST rules and let states opt out. The current US schedule (second Sunday March to first Sunday November) took effect in 2007 under the Energy Policy Act of 2005.

Mexico adopted time zones separately. It abolished DST nationally in 2022. The IANA time zone database now encodes a split: America/Mexico_City stays fixed at UTC−6, while America/Chicago and America/Winnipeg continue to alternate between CST and CDT.

What “CST” actually means (and what it doesn’t)

CST stands for Central Standard Time, UTC−6. CDT stands for Central Daylight Time, UTC−5. “Central Time” (CT) is the safe umbrella term covering both. Many people write “CST” year-round out of habit. A “6:00 p.m. CST” meeting invitation in July is technically wrong: the clock is on CDT.

The global CST trap

In international contexts, CST also means China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). Use “America/Chicago” or the UTC offset when precision matters.

Will Central Time ever stop changing clocks?

The Sunshine Protection Act would make daylight saving time permanent across the US. The Senate passed it in 2022. The House did not. As of 2026, the bill has been reintroduced but not enacted. If it passes, Central Time would lock at UTC−5 year-round and the November and March clock changes would end. Some states have passed trigger laws that would adopt permanent DST if Congress authorizes it. Permanent standard time (UTC−6 year-round) remains legal for any state to adopt without Congressional action. For now, the clocks still move.