Zman — Jewish Time

发行商 100-8 Studio AppTrack Ninja。

Jewish time, to the rega

Zman shows the present moment in Jewish time, and only in Jewish time: the Hebrew date, the hour of the day, the chelek and the rega, with no Gregorian date and no civil clock. The day begins at 18:00, Jerusalem mean time. It has 24 hours; each hour, 1,080 chalakim; each chelek, 76 rega’im (Rambam, Hilchot Kiddush HaChodesh). These divisions are proportions of the day, not seconds: a day is one real rotation of the Earth, however long it lasts. That is why Zman does not follow the atomic clock but UT1, the time scale that follows the Earth’s rotation as measured by the IERS. The app counts re…

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