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Learn the meaning, origin, and usage of the idiom "Around the clock" with five example sentences across different contexts. This idiom is part of ourTime, Speed, & Urgency collection for PTE and IELTS preparation.

The idiom originated in the late 19th and early 20th centuries, heavily tied to the rise of mechanized industrial labor and the introduction of continuous 24-hour factory shifts. It visually references the hands of a clock completing a full 360-degree rotation, covering both the AM and PM cycles. The phrase gained widespread cultural popularity in the 1950s with the explosion of Bill Haley & His Comets' rock and roll hit, 'Rock Around the Clock.'
To ensure we hit the product launch deadline on Monday, our engineering teams in both London and Sydney will be working around the clock this weekend.
After my son caught the flu, my husband and I had to look after him around the clock just to keep his fever down.
The implementation of automated assembly lines allows modern manufacturing facilities to operate around the clock, significantly increasing production efficiency while reducing human labor costs.
Emergency services worked around the clock to clear the debris and restore power to thousands of homes following the severe storm.
Our medical personnel have demonstrated unparalleled dedication, providing around-the-clock care to patients in critical condition during this healthcare crisis.
A. The internet café is open around the clock, so you can go there at 3:00 AM if you need to study.
B. I only have ten minutes left, so I need to hurry around the clock to finish my exam.
C. She arrived around the clock at exactly 5:00 PM for her job interview.
D. The circular racetrack was designed so that the race cars could drive around the clock.