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In POSIX, UTC-2 means 2 hours after UTC, and UTC+2 means 2 hours before UTC. In other words, If it's currently 8am in UTC, it's 10am in time zone UTC-2, and 6am in time zone UTC+2.

This thread captures the issue well, but doesn't explain the reasoning for why things are this way in POSIX. Why is it this way?

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closed as not constructive by soandos, Paul, random Jul 10 '12 at 21:09

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Hello Jer, please read the faq, this site is to find solutions to technical problems. Discussions are better carried out in forums. –  Paul Jun 13 '12 at 0:38
    
Best guess: Because someone messed up. –  Lennart Regebro Jul 1 '13 at 9:45

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