To change the clocks forward by one hour for daylight saving time; the "spring forward" in spring forward, fall back.

plural of 24-hour clock

Synonym of twenty-four seven

The worst situation comes before a good one.

Alternative form of the darkest hour is just before the dawn

A clock made of two glass vessels connected by a narrow passage through which sand flows. / (graphical user interface) A cursor, often shaped like an hourglass, indicating that the computer is busy.

Occurring every hour. / Unsalaried, paid by the hour; (by extension) blue-collar.

At intervals of an hour.

Something produced each hour.

(Islam) A nymph in the form of a beautiful virgin supposed to dwell in Paradise for the enjoyment of the faithful. / (by extension) Any voluptuous, beautiful woman.