How many hours is UTC behind IDT?
As abbreviations, IDT is always 3 hours ahead of UTC: UTC is UTC+0 and IDT is UTC+3. To convert, add 3 hours.
Check which label you actually need: IDT (Israel Time is on IST today). A time written with an abbreviation that is not in use is usually meant as the local time, so convert between the places instead: right now IDT is 2 hours ahead of UTC.
When the UTC to IDT time difference changes
For most of the year IDT is 3 hours ahead of UTC. From 25 October to 31 December 2026, IDT is 2 hours ahead of UTC 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 | IDT vs UTC | Length |
|---|---|---|
| 25 October 2026 to 31 December 2026 | 2 hours ahead | 68 days |
| 1 January 2027 to 25 March 2027 | 2 hours ahead | 84 days |
| 26 March 2027 to 30 October 2027 | 3 hours ahead | 219 days |
| 31 October 2027 to 31 December 2027 | 2 hours ahead | 62 days |
Calling hours for UTC and IDT
- When IDT is 3 hours ahead of UTC: 5 shared office hours, 09:00 to 14:00 in UTC (12:00 to 17:00 in IDT).
- When IDT is 2 hours ahead of UTC: 6 shared office hours, 09:00 to 15:00 in UTC (11:00 to 17:00 in IDT).