He always says 'time is money' and strives not to waste a single second.

You should always be prepared for the time of need.

I woke up at the witching hour.

Following the customs of the time, they celebrated the festival.

During rush hour, the trains are very crowded.

There are no words to describe that beauty.

He is always grumbling about trivial things, it's really annoying.

The exam ended and the results were good, so I thought 'all's well that ends well'.

My class starts at eleven o'clock.

I eat lunch at twelve o'clock.