UTC+07:00

UTC+07:00 is an identifier for a time offset from UTC of +07:00. In ISO 8601 the associated time would be written as 2016-02-01T07:29:42+07:00.

Also known as Indochina Time (ICT), it is used in:

As standard time (Northern Hemisphere winter)

East Asia

It is considered the westernmost time zone in East Asia.

As standard time (all year round)

North Asia

Southeast Asia

Antarctica

Discrepancies between official UTC+07 and geographical UTC+07

Since legal, political and economic in addition to physical or geographical criteria are used in the drawing of time zones, it follows that official time zones do not precisely adhere to meridian lines. The UTC+07 time zone, were it drawn by purely geographical terms, would consist of exactly the area between meridians 97°30′ E and 112°30′ E. As a result, there are Asian locales that despite lying in an area with a "physical" UTC+07 time, actually use another time zone.
Conversely, there are Asian areas that have gone for UTC+07, even though their "physical" time zone is UTC+06 (western most part of Indonesia).

UTC−07:00

UTC−07:00 is a time offset that subtracts 7 hours from Coordinated Universal Time (UTC). In North America, it is observed in the Mountain Time Zone during standard time, and in the Pacific Time Zone during the other 8 months (see Daylight saving time). A few places use it year round.

As standard time (Northern Hemisphere winter)

North America

UTC+07:30

UTC+07:30 is an identifier for a time offset from UTC of +07:30.

UTC+07:30 was used both as daylight saving time as well as its Standard Time later in Singapore. Between 1941 and 1942 before the Japanese occupation, and from 1945 to 1970 after the occupation, Singapore used UTC+07:30 as its daylight saving time. It was later in 1970 that Singapore decided to declare UTC+07:30 as its Singapore Standard Time.

UTC+08:00 is the current Singapore Standard Time and this time standard has been in use since 1982.

See also