When it is 09:00 in Chicago it is 09:00 in Mexico City in January and 08:00 in July. Mexico City is the same time Chicago right now — but it is not constant: the difference is the same time in January and 1 hour behind in July. This page gives the live times in both cities, the overlap between their working days, the daylight saving dates that move the difference, and the best meeting windows.
Try the tool: Time Zone Converter — convert any time between Chicago and Mexico City, with the offset for the date you pick.
Live times in Chicago and Mexico City
The two cities side by side. The January column uses the winter offsets (Chicago UTC−06:00, Mexico City UTC−06:00); the July column uses the summer offsets (Chicago UTC−05:00, Mexico City UTC−06:00).
| Time in Chicago | Mexico City in January | Mexico City in July |
|---|---|---|
| 00:00 | 00:00 | 23:00 |
| 06:00 | 06:00 | 05:00 |
| 09:00 | 09:00 | 08:00 |
| 12:00 | 12:00 | 11:00 |
| 15:00 | 15:00 | 14:00 |
| 17:00 | 17:00 | 16:00 |
| 21:00 | 21:00 | 20:00 |
The world clock shows the current time in both cities live, and the individual city pages — time in Chicago and time in Mexico City — explain each city's time zone, offsets and daylight saving in full.
The time difference between Chicago and Mexico City
The difference is not constant. In January Mexico City is the same time Chicago; in July it is 1 hour behind Chicago. The difference changes on Sunday, 8 March 2026 (from the same time to 1 hour behind) and Sunday, 1 November 2026 (from 1 hour behind to the same time) — those are the dates when one of the two cities changes its clocks and the other does not, or when they change on different days. Between those dates the difference is one value; outside them it is the other.
To convert a time, add the difference: 09:00 in Chicago is 09:00 in Mexico City in January and 08:00 in July; 17:00 in Chicago — the end of the working day — is 17:00 in Mexico City in January and 16:00 in July. To go the other way, subtract it: 09:00 in Mexico City is 09:00 in Chicago in January. The time difference calculator does the arithmetic for any date, and the UTC to Mexico City page gives the full conversion table for Mexico City.
Meeting overlap between Chicago and Mexico City
The overlap is the hours when both cities are in their working day (09:00–17:00 local time). The table marks the overlapping hours in Chicago's working day and shows what time they are in Mexico City.
January
| Chicago time | Mexico City time | Both working? |
|---|---|---|
| 09:00 | 09:00 | Yes |
| 10:00 | 10:00 | Yes |
| 11:00 | 11:00 | Yes |
| 12:00 | 12:00 | Yes |
| 13:00 | 13:00 | Yes |
| 14:00 | 14:00 | Yes |
| 15:00 | 15:00 | Yes |
| 16:00 | 16:00 | Yes |
July
| Chicago time | Mexico City time | Both working? |
|---|---|---|
| 09:00 | 08:00 | No |
| 10:00 | 09:00 | No |
| 11:00 | 10:00 | No |
| 12:00 | 11:00 | No |
| 13:00 | 12:00 | No |
| 14:00 | 13:00 | No |
| 15:00 | 14:00 | No |
| 16:00 | 15:00 | No |
In January the overlap is 8 hours: 09:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00 Chicago time. In July it is 0 hours: there is no hour when both cities are in their working day. The meeting planner finds the overlap for any two cities and any date, and the meeting time finder finds it for a whole team.
Daylight saving in Chicago and Mexico City
Chicago observes daylight saving: in 2026 the clocks go forward on 8 March 2026 and back on 1 November 2026, moving the offset from UTC−06:00 to UTC−05:00.
Mexico City does not observe daylight saving, so its offset of UTC−06:00 never changes.
The difference changes on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026. On those dates, one city changes its clocks and the other does not — or they change on different days — so the difference moves by an hour. A standing meeting set in one city's local time will land an hour early or late on the other side until the second city catches up. The fix is to set the calendar event in UTC, or to check the overlap again after each change. The individual DST pages — Chicago DST 2026 and Mexico City DST 2026 — give the exact dates for each city.
Best meeting windows
The best windows in January are 09:00–17:00 in Chicago (09:00–17:00 in Mexico City). These are the hours inside both working days, so nobody is up early or late. It is a short window, so keep the meeting short and send an agenda in advance.
Calling and travel notes
When it is 09:00 in Chicago it is 09:00 in Mexico City in January; when it is 12:00 in Chicago it is 12:00 in Mexico City; when it is 17:00 in Chicago it is 17:00 in Mexico City. The difference is under 12 hours, so the two cities are usually on the same date — but check the date for late-evening and early-morning times, when the date can differ by a day. Scheduling inside the Americas is usually straightforward: the difference between Chicago and Mexico City is small, and the working days overlap for most of the day. The main thing to check is daylight saving — not every place in the Americas observes it, and the ones that do change on different dates (the United States and Canada in March and November, Chile in September and April, Mexico not at all since 2022).
Worked conversions
Six conversions, for January (offsets Chicago UTC−06:00, Mexico City UTC−06:00):
| Chicago | Mexico City |
|---|---|
| 08:00 | 08:00 |
| 09:00 | 09:00 |
| 12:00 | 12:00 |
| 14:00 | 14:00 |
| 17:00 | 17:00 |
| 20:00 | 20:00 |
In July, add 1 hour to each Mexico City time. For the reverse direction, see Mexico City to Chicago time.
Chicago and Mexico City at a glance
| Fact | Chicago | Mexico City |
|---|---|---|
| Country | United States | Mexico |
| Region | Americas | Americas |
| IANA time zone | America/Chicago |
America/Mexico_City |
| Standard offset | UTC−06:00 | UTC−06:00 |
| Daylight saving offset | UTC−05:00 | — does not observe |
| Offset in January 2026 | UTC−06:00 | UTC−06:00 |
| Offset in July 2026 | UTC−05:00 | UTC−06:00 |
| Observes daylight saving | Yes | No |
The table is the whole pair in one place. The two numbers that matter most are the January and July offsets: if they are the same in both columns for a city, that city's offset never changes; if they differ, the city observes daylight saving and the difference between the cities moves with it. The individual city pages — time in Chicago and time in Mexico City — explain each city's time zone, and the DST pages — Chicago DST 2026 and Mexico City DST 2026 — give the exact change dates.
Frequently asked questions
What is the time difference between Chicago and Mexico City?
Mexico City is the same time Chicago right now. In January the difference is the same time and in July it is 1 hour behind — it changes with daylight saving.
How do I schedule a recurring meeting between Chicago and Mexico City?
Pick a time inside the overlap — 09:00–17:00 Chicago time — and set the calendar event in UTC so it moves correctly when the clocks change. Re-check the overlap in March and October, when the difference moves, and rotate the time if the meeting falls outside someone's working day.
What time is it in Mexico City when it is 09:00 in Chicago?
It is 09:00 in January and 08:00 in July. The time zone converter gives the answer for any date.
What is the best time for a meeting between Chicago and Mexico City?
The best windows in January are 09:00–17:00 Chicago time — inside both working days.
Does the time difference between Chicago and Mexico City change during the year?
Yes. It changes on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026, when one city changes its clocks and the other does not.
What time is it in Chicago when it is 09:00 in Mexico City?
It is 09:00 in January and 10:00 in July. See Mexico City to Chicago time for the full comparison from Mexico City's side.
What are the time zones of Chicago and Mexico City?
Chicago is in America/Chicago (UTC−06:00 standard time) and Mexico City is in America/Mexico_City (UTC−06:00 standard time).
What time is it in Chicago when it is midnight in Mexico City?
It is 00:00 in Chicago in January and 01:00 in July — the same time, because the two cities are on the same time. Midnight conversions are the ones that most often land on the wrong date, so always check the date as well as the time.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's time zone converter and meeting planner — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.