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Time difference between Chicago and Denver

Denver is 1 hour behind Chicago. When it's 9:00 in Chicago, it's 08:00 in Denver.

Denver is 1 hour behind Chicago.

On Tuesday, 6 October 2026, 09:00 in Chicago is 08:00 in Denver. Chicago is UTC−5; Denver is UTC−6.

The gap through 2026

  1. 1 Jan – 8 MarDenver is 1 hour behind Chicago.
  2. 8 Mar – 8 MarDenver is 2 hours behind Chicago.
  3. 8 Mar – 1 NovDenver is 1 hour behind Chicago.
  4. 1 Nov – 1 NovDenver and Chicago are on the same time.
  5. 1 Nov – 31 DecDenver is 1 hour behind Chicago.
  • Chicago moves its clocks forward on 8 March (UTC−6 → UTC−5).
  • Denver moves its clocks forward on 8 March (UTC−7 → UTC−6).
  • Chicago moves its clocks back on 1 November (UTC−5 → UTC−6).
  • Denver moves its clocks back on 1 November (UTC−6 → UTC−7).

Chicago to Denver, hour by hour

On Tuesday 6 October.

ChicagoDenver
07:00 Early morning06:00 Sleeping hours
08:00 Early morning07:00 Early morning
09:00 Working hours08:00 Early morning
10:00 Working hours09:00 Working hours
11:00 Working hours10:00 Working hours
12:00 Working hours11:00 Working hours
13:00 Working hours12:00 Working hours
14:00 Working hours13:00 Working hours
15:00 Working hours14:00 Working hours
16:00 Working hours15:00 Working hours
17:00 Evening16:00 Working hours
18:00 Evening17:00 Evening
19:00 Evening18:00 Evening
20:00 Evening19:00 Evening
21:00 Evening20:00 Evening
22:00 Sleeping hours21:00 Evening

Daylight saving in 2026

  • Chicago moves its clocks forward on Sunday 8 March (UTC−6 → UTC−5).
  • Denver moves its clocks forward on Sunday 8 March (UTC−7 → UTC−6).
  • Chicago moves its clocks back on Sunday 1 November (UTC−5 → UTC−6).
  • Denver moves its clocks back on Sunday 1 November (UTC−6 → UTC−7).
  1. 1 Jan – 8 MarDenver is 1 hour behind Chicago.
  2. 8 Mar – 8 MarDenver is 2 hours behind Chicago.
  3. 8 Mar – 1 NovDenver is 1 hour behind Chicago.
  4. 1 Nov – 1 NovDenver and Chicago are on the same time.
  5. 1 Nov – 31 DecDenver is 1 hour behind Chicago.

Best times for a call

Working hours (09:00–17:00) overlap for 7 hours: 10:00–17:00 in Chicago, which is 09:00–16:00 in Denver.

  • Chicago 10:00Working hoursDenver 09:00Working hours
  • Chicago 11:00Working hoursDenver 10:00Working hours
  • Chicago 12:00Working hoursDenver 11:00Working hours

More time differences for Chicago and Denver

How the time difference calculator works

The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.

Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.

Examples

  • London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
  • Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.

Good for

  • Knowing when a colleague's day starts
  • Setting expectations for replies across time zones
  • Planning travel and jet lag

Frequently asked questions

What time is it in Denver when it's 9 AM in Chicago?
8:00 AM — as of 6 October 2026. Denver is 1 hour behind Chicago.
Does the time difference between Chicago and Denver change?
Yes. In 2026 it's 1 hour or 2 hours or 0 minutes, depending on the date, because the two cities change their clocks on different dates.
What's the best time for a call between Chicago and Denver?
Between 10:00 and 17:00 Chicago time, when both cities are in working hours (09:00–17:00).
What time zones are Chicago and Denver in?
Chicago uses America/Chicago (UTC−5 today); Denver uses America/Denver (UTC−6 today).

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