| Abbreviation | Definition |
|---|---|
| ICT | IndoChina Time |
| IDL | International Date Line |
| IOT | Indian Chagos Time |
| IRDT | Iran Daylight Time |
| IRKST | Irkutsk Summer Time |
| IRKT | Irkutsk Time |
| IRST | Iran Standard Time |
| IST | Indian Standard Time |
| IST | Irish Summer Time [UTC - 0000] |
| IST | Israel Standard Time |
| IT | Iran Time [UTC + 0300] |
| JST | Japan Standard Time [UTC + 0900] |
| JT | Java Time [UTC + 0730] |
| KGT | Kyrgyzstan Time |
| KRAST | Krasnoyarsk Summer Time |
| KST | Korea Standard Time |
| KST | Korean Standard Time [UTC + 0800] |
| LAT | Local Apparent Time |
| LDT | Local Daylight (Saving) Time |
| LMT | Local Mean Time |