For international travelers, many airports use 24-hour clocks on their departure boards to prevent misunderstandings.

I couldn't go to work yesterday because I had the 24-hour flu.

The IT support team monitors the servers twenty-four hours a day to prevent downtime.

When everything seemed lost, she reminded herself that the darkest hour is just before the dawn and kept going.

When morale was low, their mentor reminded the class of the proverb the darkest hour is always just before the dawn to encourage everyone to persevere.

The hourslong power outage left the neighborhood in darkness and frustration.

The company hired several hourlies to manage the pop-up event during the weekend.

The hourglass-shaped vase balanced precariously on the narrow ledge.

At the vintage dress show, several models showcased elegant hourglass figures that drew admiring glances.

The weld joint exhibited hourglassing after repeated load cycles, compromising the assembly's integrity.