Daykite
Get started

Time difference between Denver and Athens

Athens is 9 hours ahead of Denver. When it's 9:00 in Denver, it's 18:00 in Athens.

Athens is 9 hours ahead of Denver.

On Tuesday, 6 October 2026, 09:00 in Denver is 18:00 in Athens. Denver is UTC−6; Athens is UTC+3.

The gap through 2026

  1. 1 Jan – 8 MarAthens is 9 hours ahead of Denver.
  2. 8 Mar – 29 MarAthens is 8 hours ahead of Denver.
  3. 29 Mar – 25 OctAthens is 9 hours ahead of Denver.
  4. 25 Oct – 1 NovAthens is 8 hours ahead of Denver.
  5. 1 Nov – 31 DecAthens is 9 hours ahead of Denver.
  • Denver moves its clocks forward on 8 March (UTC−7 → UTC−6).
  • Athens moves its clocks forward on 29 March (UTC+2 → UTC+3).
  • Athens moves its clocks back on 25 October (UTC+3 → UTC+2).
  • Denver moves its clocks back on 1 November (UTC−6 → UTC−7).

Denver to Athens, hour by hour

On Tuesday 6 October.

DenverAthens
07:00 Early morning16:00 Working hours
08:00 Early morning17:00 Evening
09:00 Working hours18:00 Evening
10:00 Working hours19:00 Evening
11:00 Working hours20:00 Evening
12:00 Working hours21:00 Evening
13:00 Working hours22:00 Sleeping hours
14:00 Working hours23:00 Sleeping hours
15:00 Working hours00:00+1 Sleeping hours
16:00 Working hours01:00+1 Sleeping hours
17:00 Evening02:00+1 Sleeping hours
18:00 Evening03:00+1 Sleeping hours
19:00 Evening04:00+1 Sleeping hours
20:00 Evening05:00+1 Sleeping hours
21:00 Evening06:00+1 Sleeping hours
22:00 Sleeping hours07:00+1 Early morning

Daylight saving in 2026

  • Denver moves its clocks forward on Sunday 8 March (UTC−7 → UTC−6).
  • Athens moves its clocks forward on Sunday 29 March (UTC+2 → UTC+3).
  • Athens moves its clocks back on Sunday 25 October (UTC+3 → UTC+2).
  • Denver moves its clocks back on Sunday 1 November (UTC−6 → UTC−7).
  1. 1 Jan – 8 MarAthens is 9 hours ahead of Denver.
  2. 8 Mar – 29 MarAthens is 8 hours ahead of Denver.
  3. 29 Mar – 25 OctAthens is 9 hours ahead of Denver.
  4. 25 Oct – 1 NovAthens is 8 hours ahead of Denver.
  5. 1 Nov – 31 DecAthens is 9 hours ahead of Denver.

Best times for a call

Working hours (09:00–17:00) in Denver and Athens don't overlap, so any call is early or late for someone.

  • Denver 07:00Early morningAthens 16:00Working hours
  • Denver 09:00Working hoursAthens 18:00Evening
  • Denver 10:00Working hoursAthens 19:00Evening

More time differences for Denver and Athens

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 Athens when it's 9 AM in Denver?
6:00 PM — as of 6 October 2026. Athens is 9 hours ahead of Denver.
Does the time difference between Denver and Athens change?
Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because the two cities change their clocks on different dates.
What's the best time for a call between Denver and Athens?
There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in Denver (16:00 in Athens).
What time zones are Denver and Athens in?
Denver uses America/Denver (UTC−6 today); Athens uses Europe/Athens (UTC+3 today).

Related tools

See everyone's local time as you schedule

Daykite converts every time in your calendar, so nobody gets an invite at 3 a.m.

Try Daykite free