Observed arrival · 2026-11-13
Time Zero, a clock with year zero at the origin
A timekeeping proposal and live counter that counts SI seconds from 0000-01-01 UTC, including leap seconds.
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- Developers and timekeeping-system designers
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- The page says its count remains 11 digits until about 3168, while Unix seconds stay below 10 billion until 2286.
Field notes
The page displays a current millisecond count alongside Unix seconds, leap seconds so far, a TAI−UTC offset, the UTC civil date, and a day number. It says the leap-second table comes from IERS and that implementations apply published adjustments rather than choosing them. A historical section traces the epoch’s rationale through calendar and computing history.
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