Highlighted rows fall within 09:00–18:00 in both places: 5 shared working hours.
Clock changes in IST and Rome
IST
India Standard Time (IST)
No daylight saving time.
Rome
Central European Summer Time (CEST)
Next clock change Sun 25 Oct 2026 (UTC+2 → UTC+1)
Time difference between IST and Rome today
At this moment Rome is 3.5 hours behind of IST. When it is 09:00 in IST, it is 05:30 in Rome. IST is on India Standard Time (IST); Rome is on Central European Summer Time (CEST).
When the IST to Rome time difference changes
For most of the year Rome is 3.5 hours behind of IST. From 25 October to 31 December 2026, Rome is 4.5 hours behind of IST instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Rome vs IST
Length
29 March 2026 to 24 October 2026
3.5 hours behind
210 days
25 October 2026 to 31 December 2026
4.5 hours behind
68 days
1 January 2027 to 27 March 2027
4.5 hours behind
86 days
28 March 2027 to 30 October 2027
3.5 hours behind
217 days
31 October 2027 to 31 December 2027
4.5 hours behind
62 days
Calling hours for IST and Rome
When Rome is 3.5 hours behind of IST: 4 shared office hours, 13:00 to 17:00 in IST (09:30 to 13:30 in Rome).
When Rome is 4.5 hours behind of IST: 3 shared office hours, 14:00 to 17:00 in IST (09:30 to 12:30 in Rome).
Frequently asked questions about IST and Rome time
What time is it in Rome when it is 9:00 AM in IST?
05:30 today; Rome is 3.5 hours behind of IST.
Does the time difference between IST and Rome change?
Yes. It is usually 3.5 hours behind, but changes when one side moves its clocks: 4.5 hours behind from 25 October to 31 December 2026; 4.5 hours behind from 1 January to 27 March 2027.