The workers would come into this store at seven oclock in the morning and work until twelve oclock at night.

VOA: special.2010.03.03

For many years after Mister Harrison's work was completed, the idea of using a clock to learn longitude was rejected.

VOA: special.2010.07.14

For Buck the breakthrough represented the payoff for three years of round-the-clock work in the lab at Columbia.

FORBES: Magazine Article

In spite of round-the-clock work, progress on boring a huge tunnel into the earth was not up to mark.

FORBES: Delhi's Subway Builder

Commanders at Creech say that if there is stress, it comes from relentless around-the-clock shift work.

CNN: Remote warfare ushers new kind of stress