Atlanta, IL, USA to BST Time Converter

Updating current time…
Atlanta
Illinois, USACDT
UTC−5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Atlanta's clocks go back 1 hour on Sun, Nov 1 · CDT → CST
GMT/BST
Greenwich Mean Time
UTC+0
5h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on standard time: GMT (UTC+0) until Sun, Mar 28, 2027.
Keep BST (UTC+1)

Quick answers

Selected conversion

7:30 am07:30 CDT (UTC-5), Oct 25, 2026 = 12:30 pm12:30 GMT (UTC+0), Oct 25, 2026

Atlanta is 5 hours behind GMT.

How the time difference changes

For most of the year, Atlanta, IL, USA is 6 hours behind BST. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, Atlanta, IL, USA is 5 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, Atlanta, IL, USA is 6 hours behind GMT.

For most of the year, working hours of 9:00 am to 6:00 pm in Atlanta, IL, USA correspond to 3:00 pm to 12:00 am (next day) in BST. At other times of the year, working hours of 9:00 am to 6:00 pm in Atlanta, IL, USA correspond to 3:00 pm to 12:00 am (next day) in GMT or working hours of 9:00 am to 6:00 pm in Atlanta, IL, USA correspond to 2:00 pm to 11:00 pm in GMT.For most of the year, working hours of 09:00 to 18:00 in Atlanta, IL, USA correspond to 15:00 to 00:00 (next day) in BST. At other times of the year, working hours of 09:00 to 18:00 in Atlanta, IL, USA correspond to 15:00 to 00:00 (next day) in GMT or working hours of 09:00 to 18:00 in Atlanta, IL, USA correspond to 14:00 to 23:00 in GMT.

Compare Atlanta time with BST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

CDT (Central Daylight Time) is 5 hours behind Greenwich Mean Time.
7:30 am07:30 in Atlanta, IL, USA is 12:30 pm12:30 in GMT

Atlanta to GMT call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in Atlanta which corresponds to 2pm-6pm14:00-18:00 in GMT

7:30 am07:30 CDT (Central Daylight Time) (Atlanta, IL, USA). Offset UTC -5:00 hours
12:30 pm12:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

7:30 am07:30 Atlanta, IL, USA / 12:30 pm12:30 GMT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
Atlanta, IL, USAGMT
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Atlanta Time Zone and Facts

Time Zone

Abbreviation / Offset
CDT – Central Daylight Time, UTC-5 (now, daylight saving time)
CST – Central Standard Time, UTC-6 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (CST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (CDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Atlanta Facts

Country
USA
State
Illinois
Population
1,648
Currency
Dollar (USD)
Geographic Coordinates
40° 15' N Latitude / 89° 14' W Longitude
International Dialing Code
+1
More About Atlanta
Atlanta local time and city facts

British Summer Time

Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Guernsey, Isle of Man, Jersey, United Kingdom

Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

Current time in the United Kingdom: UK time now

Map of the areas on British Summer Time (BST)
BST part of the year

Today the shaded areas are on UTC+0 (GMT).

Open the world time zone map© OpenStreetMap

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for BST
  • A - short form of 'Alpha'
IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT