About GMT UTC CST and Linux time zone settings

Source: Internet
Author: User
Tags local time

GMT is GMT, UTC is the universal Time, GMT and UTC are the same time

Beijing time is East eight district, namely Gmt+8 or utc+8

Cst:central Standard Time (CST) is 6 hours behind coordinated Universal time (UTC). This time zone was in use during standard time in: North America, central America.

See: HTTPS://WWW.TIMEANDDATE.COM/TIME/ZONES/CST

Supposedly cst=utc-6.

However, CST has no meaning in the time zone environment variable TZ in Linux.

The format of TZ is:

set TZ=TZN[+|-]HH[:MM[:SS]][DZN]

TZN: Three-letter time zone name.
HH:UTC and local time difference , optionally with the symbol.
MM: minutes, separated by a colon (:) and HH.
SS: Seconds, separated by a colon (:) and mm.
DZN: Three-letter daylight time zone such as PDT.

In fact TZN and DZN can be any 3 letters, as long as the middle of the time difference is set correctly .

For example: Export tz= ' CST-8 ', where CST can write any letter, the key is-8, the system is to think your current time minus 8 hours is Greenwich Standard Time,

It's just east eight, so it's usually written when we set up the Beijing time zone, but it can actually be written as export tz= ' abcd-8 ', and the timing is right, and the key is the time difference and +-sign .

About GMT UTC CST and Linux time zone settings

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