Convert CST to EET Central Standard Time ↔ Eastern European Time Free Online Secure
Type a time in CST and read it in EET straight away. The offset is +8 h, the arithmetic wraps at midnight, and the answer says which day it lands on.
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Through the day — Convert CST to EET (Central Standard Time ↔ Eastern European Time)
| CST | EET |
|---|---|
| 00:00 | 08:00 |
| 03:00 | 11:00 |
| 06:00 | 14:00 |
| 09:00 | 17:00 |
| 12:00 | 20:00 |
| 15:00 | 23:00 |
| 18:00 | 02:00 |
| 21:00 | 05:00 |
Where these units come from
Until the middle of the nineteenth century every town kept its own noon, set by the sun overhead, and nobody minded that the next town was four minutes behind. Railways ended that: a timetable cannot be written for a hundred local noons. Britain put its railways on Greenwich time in 1847, and in 1884 the International Meridian Conference in Washington chose Greenwich as the prime meridian and sketched the twenty-four-hour scheme we still use. Greenwich Mean Time was the world's reference until 1972, when Coordinated Universal Time replaced it: UTC is kept by atomic clocks and tied back to the turning Earth by leap seconds. The abbreviations on this page name standard time — the winter setting — which is why each one is a fixed number of hours rather than something that drifts through the year.
Where you meet them
A time zone becomes real the moment two people in different places have to agree on one moment: a call between offices, a flight that lands before it took off, a market that opens while you are asleep, a deadline written in somebody else's afternoon. Server logs, train and flight schedules and anything stamped with a time are kept in UTC precisely so that the question can always be settled, no matter whose clock was on the wall.
Questions people ask
What about summer time?
The offsets here are standard-time offsets, the ones a zone keeps in winter. Where summer time is observed, the same places move one hour further on for part of the year and take a different name: Central European Time becomes Central European Summer Time, Eastern Standard Time becomes Eastern Daylight Time. The switching dates are not the same in every country, and the two hemispheres change in opposite months, so for a date inside a summer-time period add an hour to whichever side observes it.
Why isn't every difference a whole number of hours?
Because offsets are decided by governments, not by geometry. India is half an hour off the hour, at UTC+05:30; Nepal is three quarters, at UTC+05:45; the Chatham Islands are at UTC+12:45. Any of these can be changed by law, and several countries have moved their offset within living memory.
Is the answer exact?
Where both units are defined in terms of one another by whole numbers, yes — the page says so above the figure, and the only rounding is in how many digits are shown. Where the ratio has no finite decimal, the page shows twelve significant digits and says the relation is approximate rather than pretending otherwise.
Does anything I type leave my device?
No. The arithmetic runs in your browser; nothing is uploaded and there is no server to upload it to. Load the page once and it keeps working with the network switched off.
Black Sea wheat, the Chicago exchange and the clock in Bucharest
The grain exchange in Chicago opens at 8:30 a.m. CT, and European wheat prices move in the same hour. An energy conference in Houston starts at 8:00 a.m. CT. The Resurrection service of a Romanian parish in Chicago peaks at midnight. Anyone following those moments from Romania, Greece, Bulgaria, Moldova, Ukraine or Finland has to convert CST to EET. On standard time the rule is a single line: add eight hours. 8:30 a.m. CST becomes 16:30 EET, 8:00 a.m. CST becomes 16:00 EET, and 12:00 CST becomes 20:00 EET. The eight-hour figure also holds in summer, between CDT and EEST; it falls to seven in two short stretches, 8 to 28 March and 25 to 31 October.
What follows are the rule, the tables and a portrait of each zone, then stories from the grain trade, energy, the diaspora, remote work and travel. Everything is calculated in the browser; no figure reaches a server.
Chicago grain and the Black Sea granary
The trading session
The grain exchange trades between 8:30 a.m. and 1:20 p.m. CT, which is 16:30 to 21:20 EET. Farmers and traders in Romania, Ukraine and Bulgaria follow it in the evening, after the European markets have closed.
The reports
A federal report published at 11:00 a.m. CT appears at 19:00 EET. A “convert CST to EET” calculation tells you at once whether you receive it before or after dinner.
Energy: the conference in Houston
The first session
The conference opens at 8:00 a.m. CST, which is 16:00 EET. Delegates in Romania and Greece who attend remotely catch it at the end of their working day.
Company announcements
An oil company’s statement published at 4:00 p.m. CST appears at 00:00 EET the following night. Analysts in eastern Europe read it the next morning.
Romanians in Chicago
The Resurrection service
An Orthodox parish in Chicago holds its Easter service at 00:00 CDT, which is 08:00 EEST on Easter morning. Believers back home can follow it online after their own service.
The service at home
The service in Romania, at 00:00 EEST, is at 16:00 CDT on the previous day. A “convert CST to EET” calculation shows that the two services are eight hours apart.
Ukrainian Village in Chicago
Independence Day
The 24 August parade sets off at 12:00 CDT, which is 20:00 EEST. Ukrainians at home watch it in the evening, after work.
The evening concert
The evening concert at 7:00 p.m. CDT begins at 03:00 EEST the next morning. Anyone who wants to see it stays up or watches the recording.
Technical support from Romania for Midwestern customers
The evening shift
A support centre in Romania serving customers in the Midwest works evenings and nights. A call received at 9:00 a.m. CST is taken at 17:00 EET, and one at 5:00 p.m. CST at 01:00 EET.
Changing shifts
The shift that ends at 02:00 EET hands its open cases over at 6:00 p.m. CST, when the American colleagues are still at work. A “convert CST to EET” calculation at each handover shows who is acting at that moment.
The United States Grand Prix in Austin
The Sunday race
The race in Austin starts around 2:00 p.m. CDT, which is 22:00 EEST. Fans in Romania watch late in the evening.
Qualifying
Saturday qualifying begins at 1:00 p.m. CDT, which is 21:00 EEST. A “convert CST to EET” calculation made beforehand shows that it falls in the Romanian evening.
Flights between Chicago and Bucharest
The afternoon departure
A flight with one stop that leaves Chicago at 16:00 CST and takes nearly thirteen hours lands at 05:00 CST, which is 13:00 EET the next day. The ticket shows 16:00 and 13:00, as for a trip of twenty-one hours.
The return
A flight from Bucharest that leaves at 08:00 EET and takes nearly thirteen hours lands at 21:00 EET, which is 13:00 CST on the same day. A “convert CST to EET” calculation shows that the departure was, in Chicago, at 00:00 CST.
How to convert CST to EET, in three steps
Step 1: add eight
CST is UTC−6 and EET is UTC+2. The East European clock stands eight hours ahead of the American Central one. Write the American time on a 24-hour clock and add 8.
Step 2: correct the date
If the total passes 24, subtract 24 and go to the next day. That happens for every Central time from 16:00 onward: 20:15 CST is 04:15 EET the next day, 23:30 CST is 07:30 EET the next day.
Step 3: check against known values
01:00 CST is 09:00 EET. 05:30 CST is 13:30 EET. 09:00 CST is 17:00 EET. 12:00 CST is 20:00 EET. 15:00 CST is 23:00 EET. 16:00 CST is 00:00 EET the next day. On summer time, 10:00 a.m. CDT is 18:00 EEST.
Central time, in plain terms
Where it applies
Chicago, Dallas, Houston, New Orleans, Minneapolis, Nashville and the Canadian city of Winnipeg, plus all of Mexico, keep their clocks on UTC−6 in winter. With spring the American states advance to UTC−5, under the name CDT.
Exceptions
Mexico and the province of Saskatchewan do not change their clocks. Against Bucharest their gap is eight hours in winter and nine in summer.
The clock of the Black Sea and the Baltic
Who keeps it
The winter time of Romania, Bulgaria, Greece, Cyprus, Finland, Estonia, Latvia, Lithuania, Ukraine and Moldova is called EET and sits at UTC+2. In summer these countries reach UTC+3, under the name EEST, between the last Sundays of March and October.
Egypt
Egypt also uses EET but sets its own summer period, from the last Friday of April to the last Thursday of October. That is why, against American Central time, it is seven hours away between 8 March and 23 April and on 30 and 31 October.
Eight hours between dials
Office hours
A Chicago office open from 09:00 to 17:00 works, on Romanian time, from 17:00 to 01:00. A Romanian office open from 09:00 to 17:00 works from 01:00 to 09:00 on the Central clock. The two days touch at a single point, at 17:00 EET.
Who rings first
A call from Bucharest at 16:00 EET reaches 8:00 a.m. CST. One from 12:00 EET reaches 4:00 a.m. CST, when nobody is at the office.
Over the ocean
A plane with one stop that takes off from Chicago at 16:00 CST and flies for nearly thirteen hours arrives at 13:00 EET the next day. The ticket says 16:00 and 13:00, as for a trip of twenty-one hours.
Online orders from Texan shops
The delivery cut-off
A shop in Dallas promises same-day dispatch for orders received by 3:00 p.m. CST. For a customer in Romania that is 23:00 EET. Anyone who orders at 23:30 EET is already half an hour late.
Offers with a deadline
An offer that ends “at midnight, Central time” expires at 08:00 EET the next morning. A “convert CST to EET” calculation made beforehand shows how many hours you still have.
The same American hour, four moments of the year
Winter
On Tuesday 27 January, 09:00 CST means 17:00 EET, with no calendar exception.
The start of spring
On Tuesday 10 March, 09:00 CDT means 16:00 EET: America advanced its clock on 8 March, eastern Europe only on the 29th, so the distance shrank by an hour.
Summer
On Tuesday 14 July, 09:00 CDT means 17:00 EEST. Both clocks are on summer time, and the eight hours are back.
Autumn
On Tuesday 27 October, 09:00 CDT means 16:00 EET, because Europe set its clocks back a week before America. On Tuesday 15 December, 09:00 CST means 17:00 EET.
The weeks with a seven-hour distance
In spring
Between 8 and 28 March America is on summer time while eastern Europe is still on winter time. The distance between CST and EET is then seven hours.
In autumn
Between 25 and 31 October Europe has returned to standard time and America has not. A “convert CST to EET” calculation on the eight-hour figure comes out an hour too late.
Clock landmarks starting from Chicago
Distances from Chicago
London is 6 hours ahead, Warsaw 7, Bucharest, Athens and Helsinki 8, Delhi 11 hours 30 minutes. To the west, Denver is 1 hour behind and Los Angeles 2.
A fully written invitation
For a discussion at 10:00 a.m. in Chicago, write 16:00 in London, 17:00 in Warsaw, 18:00 in Bucharest and 8:00 in Los Angeles; the guests will not need a “convert CST to EET” calculation.
Job interviews with Texan companies
Interview time
An interview scheduled for 10:00 a.m. CST is at 18:00 EET, at the end of a Romanian candidate’s day. One at 1:00 p.m. CST is at 21:00 EET.
Replying to the offer
A reply deadline “by the end of the day” in Texas, which is 5:00 p.m. CST, expires at 01:00 EET the following night. Whoever does not convert CST to EET with the date in view may think a day is left.
The hurricane season in the Gulf of Mexico
The national centre’s bulletins
The hurricane centre issues advisories at fixed hours. The one at 10:00 a.m. CDT appears at 18:00 EEST, and the one at 4:00 p.m. CDT at 00:00 EEST the following night.
How to read it
Each advisory carries the time of the coast it was issued from. Someone following a storm from far away does a “convert CST to EET” calculation for both times and knows when the latest version appeared.
The Houston marathon
The morning start
The January marathon starts at 7:00 a.m. CST, which is 15:00 EET. Fans in Romania follow it live in the afternoon, while the runners warm up in the cool Texan morning air.
The elite finish
The winners arrive after almost two hours, around 9:10 a.m. CST, which is 17:10 EET. A “convert CST to EET” calculation made beforehand shows when to open the broadcast.
When the gap is not the usual one
The 2026 calendar
CST and EET are not always the same distance apart. In 2026: 1 January to 7 March, 29 March to 24 October and 1 November to 31 December: EET stands 8 hours ahead of CST; 8 to 28 March and 25 to 31 October: EET stands 7 hours ahead of CST.
In practice
During the summer periods the zones are called CDT and EEST. The calculator assumes the winter gap of 8 hours; adjust by the difference shown for your date. Whenever you convert CST to EET, check which period the date falls in first.
All twenty-four hours side by side
CST against EET
00:00 CST corresponds to 08:00 EET. 01:00 CST corresponds to 09:00 EET. 02:00 CST corresponds to 10:00 EET. 03:00 CST corresponds to 11:00 EET. 04:00 CST corresponds to 12:00 EET. 05:00 CST corresponds to 13:00 EET. 06:00 CST corresponds to 14:00 EET. 07:00 CST corresponds to 15:00 EET. 08:00 CST corresponds to 16:00 EET. 09:00 CST corresponds to 17:00 EET. 10:00 CST corresponds to 18:00 EET. 11:00 CST corresponds to 19:00 EET. 12:00 CST corresponds to 20:00 EET. 13:00 CST corresponds to 21:00 EET. 14:00 CST corresponds to 22:00 EET. 15:00 CST corresponds to 23:00 EET. 16:00 CST corresponds to 00:00 EET (next day). 17:00 CST corresponds to 01:00 EET (next day). 18:00 CST corresponds to 02:00 EET (next day). 19:00 CST corresponds to 03:00 EET (next day). 20:00 CST corresponds to 04:00 EET (next day). 21:00 CST corresponds to 05:00 EET (next day). 22:00 CST corresponds to 06:00 EET (next day). 23:00 CST corresponds to 07:00 EET (next day).
Notes on the table
The table lists the full day. Where the EET date differs from the CST date, the entry says so. Use it as a reference whenever you convert CST to EET. No half-hour is involved in this pair, so the minute figures never change. Read these rows as standard-time values and check the period section for dates where the difference changes.
Half-hour conversions
CST half-hours in EET
00:30 CST corresponds to 08:30 EET. 01:30 CST corresponds to 09:30 EET. 02:30 CST corresponds to 10:30 EET. 03:30 CST corresponds to 11:30 EET. 04:30 CST corresponds to 12:30 EET. 05:30 CST corresponds to 13:30 EET. 06:30 CST corresponds to 14:30 EET. 07:30 CST corresponds to 15:30 EET. 08:30 CST corresponds to 16:30 EET. 09:30 CST corresponds to 17:30 EET. 10:30 CST corresponds to 18:30 EET. 11:30 CST corresponds to 19:30 EET. 12:30 CST corresponds to 20:30 EET. 13:30 CST corresponds to 21:30 EET. 14:30 CST corresponds to 22:30 EET. 15:30 CST corresponds to 23:30 EET. 16:30 CST corresponds to 00:30 EET (next day). 17:30 CST corresponds to 01:30 EET (next day). 18:30 CST corresponds to 02:30 EET (next day). 19:30 CST corresponds to 03:30 EET (next day). 20:30 CST corresponds to 04:30 EET (next day). 21:30 CST corresponds to 05:30 EET (next day). 22:30 CST corresponds to 06:30 EET (next day). 23:30 CST corresponds to 07:30 EET (next day).
What to remember
Half-hour starts are as easy to convert as whole hours. The rows below are the result of the same rule you use when you convert CST to EET. The gap used here is the standard winter one; the period section lists the dates on which it differs.
Ten more examples
Awkward minutes from CST to EET
01:05 CST corresponds to 09:05 EET. 03:20 CST corresponds to 11:20 EET. 05:50 CST corresponds to 13:50 EET. 07:35 CST corresponds to 15:35 EET. 10:10 CST corresponds to 18:10 EET. 13:25 CST corresponds to 21:25 EET. 16:40 CST corresponds to 00:40 EET (next day). 19:55 CST corresponds to 03:55 EET (next day). 22:15 CST corresponds to 06:15 EET (next day). 23:05 CST corresponds to 07:05 EET (next day).
Checking your work
Compare your own answer with the pattern in these rows. With a whole-hour offset the minutes are untouched; if they differ in your result, the input was misread. Read these rows as standard-time values and check the period section for dates where the difference changes.
What part of the day is it?
EET equivalents for each CST hour
06:00 CST corresponds to 14:00 EET (afternoon). 08:00 CST corresponds to 16:00 EET (afternoon). 10:00 CST corresponds to 18:00 EET (evening). 12:00 CST corresponds to 20:00 EET (evening). 14:00 CST corresponds to 22:00 EET (night). 16:00 CST corresponds to 00:00 EET (night). 18:00 CST corresponds to 02:00 EET (night). 20:00 CST corresponds to 04:00 EET (night). 22:00 CST corresponds to 06:00 EET (early morning).
How to use the list
The words in brackets describe the part of the day in EET. They help you avoid planning a call or a task for the middle of the night after you convert CST to EET. Read these rows as standard-time values and check the period section for dates where the difference changes.
Before you convert CST to EET: a short checklist
Preparation
Read the labels
Three countries share the letters CST; only the North American one, UTC−6, is used on this page. Egypt shares EET but changes its clocks on different dates from Europe.
Use a 24-hour clock
The 24-hour clock avoids a.m. and p.m. slips, so rewrite 4:30 p.m. as 16:30 before anything else. For example, 09:15 CST becomes 17:15 EET.
Then
The operation
Add 8 hours. If the result passes midnight, correct the date: readings from 16:00 fall on the next date.
A second example
Late in the evening, 22:40 CST becomes 06:40 EET (next day).
Common slips when you convert CST to EET
Subtracting instead of adding
Because EET runs ahead of CST, the result must be a later clock reading. An earlier one points to a subtraction.
Losing the date
Anything on the CST clock from 16:00 lands on the next date. If the date stays put, the answer is a full day out.
The standard figure in the wrong weeks
Do not assume that CST and EET are always the same distance apart; the period list above shows the exceptions.
Confusing the abbreviation
The abbreviation CST is shared with China (UTC+8) and Cuba (UTC−5); on this page it always means Central North America. Cairo, Athens, Bucharest and Helsinki share the EET offset, though Egypt follows its own summer calendar.
Questions and answers
By how much do CST and EET differ?
8 hours, and EET is ahead of CST. That is the standard figure; on some dates in 2026 it differs, as the period list shows.
Which sum applies when I convert CST to EET?
Add 8 hours to the CST time, then fix the date if the result passes midnight.
How much is 21:45 CST in EET?
05:45 EET on the next day in the standard period.
Does the answer change during the year?
Yes, on some dates; the period list above shows which.
Is the time I enter sent anywhere?
No. Everything happens on your own device.
More time zone converters
You may also want Convert CST to WET, Convert CST to IST, Convert GMT to EET, Convert EST to EET, Convert EET to IST, Convert IST to CST, Convert CET to EET, Convert EST to IST, Convert UTC to CET. To go the other way, use Convert EET to CST.
The short version: add 8 hours, check the date, and you can convert CST to EET with confidence. No account is needed.