IST
Irish Standard Time
GMT +1
Germany
CEST

Time Difference

Irish Standard Time is 1 hours behind CEST (Central European Summer Time)
10:00 pm22:00 in IST is 11:00 pm23:00 in Frankfurt am Main, Germany

IST to Frankfurt am Main call time
Best time for a conference call or a meeting is between 8am-5pm in IST which corresponds to 9am-6pm in Frankfurt am Main

10:00 pm22:00 Irish Standard Time (IST). Offset UTC +1:00 hour
11:00 pm23:00 CEST (Central European Summer Time) (Frankfurt am Main, Germany). Offset UTC +2:00 hours

10:00 pm22:00 IST / 11:00 pm23:00 Frankfurt am Main, Germany

IST Frankfurt am Main, Germany
12am (midnight) 1am
1am 2am
2am 3am
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4am 5am
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8am 9am
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10am 11am
11am 12pm (noon)
12pm (noon) 1pm
1pm 2pm
2pm 3pm
3pm 4pm
4pm 5pm
5pm 6pm
6pm 7pm
7pm 8pm
8pm 9pm
9pm 10pm
10pm 11pm
11pm 12am (midnight)
0:00 1:00
1:00 2:00
2:00 3:00
3:00 4:00
4:00 5:00
5:00 6:00
6:00 7:00
7:00 8:00
8:00 9:00
9:00 10:00
10:00 11:00
11:00 12:00
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17:00 18:00
18:00 19:00
19:00 20:00
20:00 21:00
21:00 22:00
22:00 23:00
23:00 0:00

Irish Standard Time

Offset: IST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe

Countries: It is used in following countries: Ireland

Principal Cities: The largest city in the IST timezone is Dublin from Ireland with population about 1.024 million people. Other major cities in the area are Cork, Dun Laoghaire, Luimneach, Gaillimh

IST Time Zone Geo Map
IST timezone map

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Greenwich Mean Time (GMT).

Start: Irish Standard Time (IST) started on Sunday, March 30, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, March 30, 2025, 2:00 am. Standard time starts annually the on last Sunday of October.

End: Irish Standard Time (IST) ends on Sunday, October 26, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, October 26, 2025, 3:00 am local daylight time instead. Standard time starts annually the on last Sunday of March.

IST 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 one hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for IST
  • A - short form of 'Alpha'
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Eire
  • Europe/Dublin
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2
  • Iran Standard Time - UTC +3:30
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

Frankfurt am Main Information

Time Zone

Abbreviation / Name
CEST - Central European Summer Time
UTC / GMT Offset
+2:00 hours during Central European Summer Time, currently in use.

Frankfurt am Main Facts

Country
Germany
Alternative Names
FRA, Francfort, Francfort - Frankfurt am Main, Francfort d'o Meno, Francfort del Meno, Francfort sul Main, Francfort-sur-le-Main, Francfòrt sul Main, Francoforte, Francoforte sul Meno, Francofurtum ad Moenum, Francuforti supro Menu, Francuforti suprô Menu, Frankford-on-Main, Frankfort, Frankfort an'n Main, Frankfort an’n Main, Frankfort on the Main, Frankfurt, Frankfurt am Main, Frankfurt del Main, Frankfurt na Majn, Frankfurt na Majni, Frankfurt nad Menem, Frankfurt nad Mohanem, Frankfurt nad Mohanom, Frankfurt-na-Majne, Frankfurt/Main, Frankfurtas prie Maino, Frankfurte pie Mainas, Frankfurto ce Majno, Frankfurto ĉe Majno, Fráncfort, Fráncfort - Frankfurt am Main, Fráncfort d'o Meno, Fráncfort del Meno, Phran'kphourte, fa lan ke fu, frankfwrt, peulangkeupuleuteu, phryankapharta, prnqpwrt, Φρανκφούρτη, Франкфурт, Франкфурт на Майн, Франкфурт на Мајни, Франкфурт-на-Майне, פרנקפורט, فرانكفورت, فرانکفورت, ফ্র্যাংকফার্ট, แฟรงค์เฟิร์ต, ფრანკფურტ-ამ-მაინი, フランクフルト・アム・マイン, 法兰克福, 프랑크푸르트
Population
650,000
Currency
Euro (EUR)
Geographic Coordinates
50° 06' N Latitude / 8° 41' E Longitude
International Dialing Code
+49