Helek
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The helek (Hebrew, meaning "portion", plural halakim) is a unit of time used in the calculation of the Hebrew calendar. The hour is divided into 1080 halakim. A helek is 31/3 seconds or 1/18 minute. The helek derives from a small Babylonian time period called a she, meaning '"barleycorn", itself equal to 1/72 of a Babylonian time degree (1° of celestial rotation).
- 360 degrees x 72 shes per degree / 24 hours = 1080 shes per hour.
