POSIX 시간
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<timefyi-glossary slug="posix-time"></timefyi-glossary>정의
사실상 유닉스 시간과 동일하며, 1970-01-01T00:00:00Z부터 경과한 초 수입니다. POSIX는 하루를 정확히 86,400초로 정의하여 의도적으로 윤초를 무시합니다.