Unix Time
Unixタイムスタンプ
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Unixタイムスタンプ（秒）
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Unix time is a system for describing a point in time. It is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970.
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Unix time is a system for describing a point in time. It is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970.