Create: 2025-04-29 Update: 2025-07-07 10:40:12

Секунды с начала эпохи Unix

Люди обычно говорят, что время POSIX, также известное как время Unix — это количество of секунд, прошедших с эпохи Unix, то есть с 00:00:00 1970-01-01.

Но это не так. Точнее, не так в смысле, подразумеваемом большинством. Например, сейчас на часах 2024-12-25, 18:51:26 UTC. Время POSIX равно 1735152686. Прошло 1735152713 секунд с эпохи POSIX. Число времени POSIX на двадцать семь секунд меньше.

Причина в том, что время POSIX вычисляется в IEEE 1003.1 из Coordinated Universal Time. Стандарт предполагает, что каждый день — это ровно 86400 секунд. Читать дальше.

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Секунды с начала эпохи Unix

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