Updating current time…
IST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ART
UTC−3
8h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 18, 2026 = 9:00 am09:00 ART (UTC-3), Oct 18, 2026

IST is 8 hours and 30 minutes ahead of ART.

IST and ART examples

These examples always use IST (UTC+5:30) and ART (UTC-3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 8 hours and 30 minutes ahead of ART.

How the time difference changes

IST is 8 hours and 30 minutes ahead of ART year-round.

Working hours of 9:00 am to 6:00 pm in IST correspond to 12:30 am to 9:30 am in ART.Working hours of 09:00 to 18:00 in IST correspond to 00:30 to 09:30 in ART.

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

Time Difference

India Standard Time is 8 hours and 30 minutes ahead of Argentina Time.
5:30 pm17:30 in IST is 9:00 am09:00 in ART

IST to ART call time
Best time for a conference call or a meeting is between 5:30pm-6pm17:30-18:00 in IST which corresponds to 9am-9:30am09:00-09:30 in ART

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 Argentina Time (ART). Offset UTC -3:00 hours

5:30 pm17:30 IST / 9:00 am09:00 ART

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Hourly time comparison
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India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bengaluru, Hyderabad, Ahmedabad.

Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Current time in India: India time now

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates an offset of five hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
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

Argentina Time

Offset: ART is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Argentina

Principal Cities: The largest city in the ART time zone is Buenos Aires in Argentina, with about 2.891 million people. Other major cities in this time zone include Córdoba, Rosario, Mar del Plata, San Miguel de Tucumán.

Daylight Saving: Clocks in Argentina Time (ART) do not change for daylight saving time, so ART stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

ART representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ART
  • P - short form of 'Papa'
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time