NOTE: The time offset can be in decimal parts for the people that live in half or quarter time zones. Some places/countries use time offsets not an integral number of hours from UTC/GMT.  Just enter Hours : Minutes for the offset.

• Afghanistan offset from UTC is +04:30
• Australia (Northern Territory)  offset from UTC is +09:30
• Australia (South Australia)  offset from UTC is +09:30 (summer +10:30)
• Burma (Myanmar)  offset from UTC is + 06:30
• India offset from UTC is +05:30
• Iran  offset from UTC is +03:30 (summer +04:30)
• Lord Howe Island (Australia) offset from UTC is +10:30 (summer +11:00)
• Marquises Islands offset from UTC is -09:30
• Norfolk Isl. (Australia) offset from UTC is +11:30
• Newfoundland (Canada)  offset from UTC is UTC/GMT -03:30 (summer -02:30)
• Sri Lanka offset from UTC is +05:30

Some places use quarter / hour offset from UTC/GMT.

• Chatham Island (New Zealand) offset from UTC is +12:45 (summer +13:45 or winter in the northern hemisphere).
• Nepal  offset from UTC is +05:45
• Western Australia, Eyre Highway towns: Eucla, Caiguna, Madura, Mundrabilla and Border Village (South Australia)  offset from UTC is +08:45

Usual Daylight Saving Time (Summer time) rule is- altering the clocks ahead by one hour.
However there are exceptions:

• Lord Howe Island (Australia) advances its clocks by half an hour in the summer. Lord Howe Island is UTC +10:30 during local winter and UTC +11:00 during local summer.
• Arizona and Hawaii in the United Stated do not observe Daylight saving time at all.