India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

IST to HAVANA Time Converter

Q: Where is havana used?

HAVANA (Havana) (havana) is used in Cuba. The IANA timezone identifier is America/Havana.

India Standard Time → HAVANA (Havana)

IST = UTC+5:30HAVANA = UTC-4

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

Ireland Standard Time (Dublin) → HAVANA ↗Israel Standard Time (Jerusalem) → HAVANA ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

Havana

Cuba · -9.5h

23:30-1 day

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

IST (Mumbai) vs Havana — time difference

IST (Mumbai) is 9 hours 30 minutes ahead of Havana. When it's noon in IST (Mumbai), it's 02:00 in Havana.

IST (Mumbai) runs on Asia/Kolkata; Havana runs on America/Havana. Together they are 9.5 hours 30 minutes apart.

Shared working hours

There is no business hours overlap between IST (Mumbai) and Havana during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.

Best call times between these locations

IST (Mumbai) and Havana have no shared working window. These slots minimize out-of-hours disruption for both sides.

16:00 Mumbai / 06:00 Havana⚡ One side off-hours

⚠️ 3h before working hours in Havana

19:00 Mumbai / 09:00 Havana⚡ One side off-hours

⚠️ 3h after working hours in Mumbai

15:00 Mumbai / 05:00 Havana⚡ One side off-hours

⚠️ 4h before working hours in Havana

Working hours defined as 09:00–17:00 local time for each location.

Public holidays this year

IST (Mumbai)

No upcoming public holidays this year.

Havana5 holidays

Jul 25Day before the Commemoration of the Assault of the Moncada garrison

Jul 26Commemoration of the Assault of the Moncada garrison

Jul 27Day after the Commemoration of the Assault of the Moncada garrison

Oct 10Independence Day

Dec 25Christmas Day

IST (Mumbai) and Havana — practical scheduling

A 9.5-hour difference separates IST (Mumbai) (India) and Havana (Cuba) — wide enough that standard business hours don't align at all. Scheduling requires deliberate compromise from both sides.

💡 Practical scheduling guidelines

⚡

A 16:00 meeting in IST (Mumbai) means 06:00 in Havana (3h before working hours in Havana).

⚡

A 19:00 meeting in IST (Mumbai) means 09:00 in Havana (3h after working hours in Mumbai).

⚡

A 15:00 meeting in IST (Mumbai) means 05:00 in Havana (4h before working hours in Havana).

With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am IST (Mumbai)".

IST (Mumbai) ↔ HAVANA (Havana)

No overlap — one side will join outside working hours

IST (Mumbai)

HAVANA (Havana)