World Time Zone Abbreviations, Description and UTC Offset
| Time Zone Abbreviation | Zone Description | Relative UTC |
|---|---|---|
| IST | Irish Summer Time | UTC+01 |
| IST | Israeli Standard Time | UTC+02 |
| IST IT |
Iran Standard Time | UTC+0330 |
| IST | Indian Standard Time | UTC+0530 |
Note: Read Interesting and confusing facts about time / time zones